Critically evaluatThe key challenge facing HR Managers in the 21st Essay

Critically evaluatThe key challenge facing HR Managers in the 21st century is to facilitate management of culture within organiz - Essay Example Proceeding from this, it is necessary to find a fundamentally new approach to priorities. The most important factor within any organization is its employees, and consumers -outside it. There is a strong need to turn the consciousness of workers towards the consumer, but not towards their supervisors, towards profit, but not wastage; towards the initiative, but not the indiscriminate fulfillment. It is necessary to make a way to social norms, based on sound economic sense, and do not forget about morality. The modern concept of development of production lies in the fact that the maximum productivity, quality and competitiveness can be achieved only by means of personal involvement of every employee; such strategy can stimulate each employee to improve the production process at their workplace first, and at the enterprise as a whole in the future. Involving staff in the process of production improvement makes a creative atmosphere and becomes a powerful motivator for staff to work that allows each employee to reveal their experience and creative ability. The central element underpinning the management is the professional nature of modern organizational management in economy of market. The term â€Å"manager† implies professional governors hired (Bach, 2005). In fact, it is a kind of social stratum, which plays a prominent role in society. What is the professional human resource manager? Since corporate culture generates the responsibility and the ability of people - a competitive advantage, the personnel manager has the following strategic objectives, which must be addressed. Nowadays, first of all, HR manager should possess some special knowledge and skills in the field of production and management, ability to work with people in different spheres of activity. Managers’ activity (regardless of rank and scope) is focused on finding and managing resources, ensuring effective and sustainable development of the organization, taking into account the lon g-term perspectives. It is important to creating competitive advantages through increased level of responsibility of personnel, using the means associated with the management of corporate culture. High corporate culture is able to attract and retain staff, establish the company's reputation, attract high- skilled workers and consumers, as well (Jaffee, 2001). Desire to update and adapt corporate culture to the changing conditions of the environment requires the provision of mutual respect between consumers and employees, continuous improvement of working conditions of staff. Employees’ involvement in various activities, related to marketing, contributes to their self-esteem (especially professional), the development of personal initiative, improve personal effectiveness. HR-service, along with other business units, should perform a variety of functions - from providing basic operations to strategic planning to succeed. However, many specialists in human resources management c ommit common mistakes - they tend to focus their attention either on strategic components of management exclusively or on tactical, while it is important to balance the strategic and tactical actions (Jaffee, 2001). One of the main strategies of the HR manager is providing a competitive advantage over other companies, with the help of diligent capacity building, promoting the growth of the employees' competence in the professional sphere. Nowadays the activity of HR-managers can

Via Verde Case Study Analysis

Via Verde Case Study Analysis Introduction The sustainability in real estate development is fundamental, however, what kind of manner can be sustainable in it is more crucial (Kwame, Liow, and Neo, 2009). In real estate development, this case study has discussed about affordable housing through ten aspects: site, concept, development team, development and approval process, development finance, planning and design, sustainability and healthy living, sales and leasing, management and performance, and observation and lessons learned. Ultimately, notifying some challenges that development might face. Via Verde is a project from the New York City about regeneration the brownfield in Bronx with 222 units mixed-income affordable housing development for rental and ownership with a healthier lifestyle to address health issues, and leads to a new recycling neighbourhood. It is a good example in affordable housing which involves both public and private sectors and city agencies who play key roles on approval and financing. In regulatory management, it performs well. Via Verde had components against green regulation of the city, however, city authorities permit amnesty, which conducts feasibility and flexibility of development. In terms of regulation, it was instituted and had no barrier to develop this project. The decision of planning is through the competition to select the most innovative and creative proposal for the unique site with lots of public and private sectors involved into it in financial, regulatory, planning, material aspects to produce maximum outcome with limited sources. Goals Via Verde planned to create an innovative, high-quality and sustainable housing for mixed-income family with affordable rental or ownership housing. It wants to achieve goal about healthy lifestyle to address problems of high rate of asthma and obesity in children in South Bronx area by green roof, open areas and motivated encouragement of outdoor activities, such as, vegetable garden, green club or indoor fitness centre, which providing resident a location or motivation to involve into green programme and rebuild their lifestyle. The Site Via Verde locates in northeast of Manhattan which is roughly 6.5 miles to the south to midtown Manhattan with fully developed tube and bus system. It sites in the South Bronx, which is one of New Yorks boroughs. It is four blocks away from the nearest tube station, and several bus routes nearby, which are easily access by foot or bike. However, the site is a long narrow and 1.5- acre triangle at the corner of a block, it is hard to develop as a massive affordable housing. In terms of educational aspect, there are some schools nearby, and colleges, where are easy to reach. Via Verde locates in a well location with well life functions, one of the largest park in the city, commercial centre on the nearby station. In 1960s and 70s, the area was suffered by high percentages of crime, especially violence and urban decay with high rates of residents outflow. A wave of arson fires had destroyed lots of buildings and left vacant, ultimately, were obtained by the city- public authority. In the late 1980s, communities have started regeneration and rehabilitation in this area with building new housing and improvement of facilities. The population had declined from roughly 1.47 million to 1.17 million and it has rebounded to 1.41 million by 2013. Bronx is known as poverty, the poorest borough in five of New York City. Large amount of working class family here with around $35,000 income, which is lowest in New York City and 28.5% of residents live in poverty. Therefore, Via Verde development has changed the decay of this area in 2009. The Concept The first process-stage of Via Verde project is as an entry in New York Housing competition, which is sponsored by public sectors and non-profit organization- the city of New York Department of Housing Preservation and Development (HPD), the New York city chapter of American Institute of Architects, the New York State Energy Research and Development Authority (NYSERDA) and Enterprise Foundation. It was the first competition for affordable housing and sustainable housing in the city. The competition was held in 2006 with some aspects and requirements- provoking innovative design and planning to address the housing production issues, resolving affordability, sustainability, transferability, and viability, illustrating how to lower cost of building, and fostering healthy, affordable with well-designed dwelling. 5 out of 32 teams with developers and architects were selected into the final competition, they were requested to refine the proposal of their design. Ultimately, a team with two developers and two architects were chosen to build this project with support by the city and the New York State Department of Environmental Conservation has provided $145,000 for environmental uses and improvement. Private city agencies play a key role as representatives in this project after competition to look after in approvals and financing process, maintaining the quality and the innovative features. Instead of using their own ideas, local communities also provide their aspects of affordable housing and green design and healthy living components to development team. The Development Team The two developers in the team are Phipps Houses and Jonathan Rose Companies. Phipps Houses is one of the oldest developer in New York City, which has developed lots of projects of affordable housing, focusing on human development to foster better residency for community and residents. Jonathan Rose Companies is a national integrated real estate company with investment management, development, project management, and planning, which concentrating on developing resilient communities. The designers are Dattner Architects and Grimshaw Architects. Dattner specializes in housing and educational, creative and innovative urban design. Contrary, Grimshaw has been worked in Bronx for many years for revitalization, a local firm which may understand the environment and residency better. This team with two developers and two architects has fully achieved primary conditions of Via Verde project, focusing on green programme, residents, community, affordable housing and localized company. The Development and Approval Process The narrow site which belongs to the city was hard to develop, additionally, the project required unusual approvals for developing, planning and environmental remediation. The city agencies who had responsibility to check the process, in terms of the unique features, it is fundamental for the project to have city agencies shepherd it. This project was supported by the city authority, which is easier for unique development like Via Verde, especially in regulation. The massive development with 222 units wasnt allowed to build in this narrow site, which needed amnesty for it. The development team coped with authorities and solved the problems together, conducting the feasibility of this project. It had more flexible process in the development than others. However, there was parking issue, normally, the residential development is required to build with parking lot, the site of Via Verde was too small for such huge amounts of residents. Nevertheless, the development team has successfully argued about it with the location where is easy to access public transportation, including tube and buses, additionally, there is a huge parking garage nearby. Eventually, the project is accepted without parking in Via Verde. The community from this area had proposed their desire to the development team, they were looking forward to addressing issues of Bronx through Via Verde project. They wish to have affordable housing with for-sale component and resolving the health issues in high rate of childhood asthma. Development Finance Paul Freitag, managing director of Jonatha Rose Companies, which is one developer of the Via Verde project, asserts that development of affordable housing is difficult and complex from different aspects, such as, financing, and planning. However, this project has supported by several different resources, such as, grants, loans, tax, credits, and other funding mechanisms from 19 public, private and non-profit authorities and organizations. Fortunately, the development team obtained the site for $1 from NYC Housing Preservation and Development (HPD) to support affordable housing. The development of Via Verde had arranged with $98.8 million, which were divided into co-op and rental parts, roughly $32 million was arranged to build 71 units of co-op housing for middle-class family, and there was taxable bonds from the New York City Housing Development Corporation (HDC) with floated rate during construction from JP Morgan Chase line of credit, and supporting by HDC, HPD, the borough presidents office, the New York City Council, the New York State Affordable Housing Corporation and NYSERDA. The $66.6 million was assigned for the rest 151 units of rental which were for low-class family, and taxable bonds from HDC with same condition for co-op, 9% federal low-income housing tax credits (LIHTCs) from New York State Homes and Community Renewal and HPD, supporting by HDC, the Federal Home Loan Bank of New York Affordable Housing Programme, and NYSERDA. Eventually, the project exceeded 10% more in cost than expected, mostly used for green features in brownfield remediation, due to poor geographical conditions. Planning and Design The goals of this project are healthier lifestyle and sustainable housing for range incomes households through numerous outdoor activities, good views, and lots of experiences which residents may never had. Three buildings built with good view and facing south, which is better absorbing solar energy. Not only the solar panels on the roof, but also green roof with vegetable and fruit garden provides residents plant and social. Via Verde is designed for rental and ownership, and there is no barrier between them. The developers planned to build a completely new form of affordable housing, instead of red bricks in the past, they selected prefabricated panels with colourful design, which are localized manufacture. Besides, windows are large and operable for good ventilation indoor. Surprisingly, they utilized waterproof layer from localized company with official certificated by LEED programme. From the green rood, windows, air ventilation, waterproof layer, these designs are toward to create a sustainable and healthy residency. Sustainability and Healthy Living The green roof of Via Verde provides not only a place to plant, but also to exercise. Besides, outdoor activities area, there is also an indoor fitness with variety of classes for residents. The design is sufficiently for environmental sustainability on saving energy and cost by using and doing recycling, such as, trash recycle, rainwater recycle system, solar energy system, material choosing, and encourage residents take stairs instead of lifts. From the beginning, the main goal of development is to address health issues in this area. The location provides good motivation for residents to walk more, with tube, school and green parks nearby, which may help to improve it. Additionally, medical centre and pharmacy are located in the ground floor. Sales and Leasing The 151 units of rental are 30 years leasing, earning 40-60 % of area median income, on the other hand, 71 units of co-ops are earning 70-100 %. Management and Performance Via Verde provides variety of activities to motivate residents in healthy lifestyle, such as, vegetable garden where they can grow natural vegetable and fruit and cheaper price of organic food for them, exercises club to encourage them. In the garden club, which is supported and educated by non-profit organization-Grow NYC in sustainable and professional manners. Community gardens, environmental education and recycling programme, these are associating with neighbourhoods to support and modify residents into healthier lifestyle. Via Verde has established a wide range classes community, they are equal, having no barrier, all residents can entrance any common areas or use common facilities. Owners and renters can be member of garden club. There are social events to increase relationship between residents and emphasize the goals of Via Verde. Such as, volunteering to involve communitys events. Annual newsletter provides communication between residents and management, residents are able to transmit their thoughts directly. When the conflicts happen, staff can conclude it instantaneously, which build communication between either residents or management with anytime concierge allowing residents to question or discuss about their considerations and problems. Unlike accustomed affordable housing which normally leads to disappointed and seldom be materialized, Via Verde has evolved into completely new kind of affordable housing with variety of services and events, free dry cleaning for residents fully reserves the expectation of affordable housing. Observation and lessons learned Via Verde has successfully become model of affordable housing development with financial feasibility, and critical acclaim around the USA. Traditionally, there are three forms of affordable housing, developers prefer low-rise, mid-rise is more common, contrary, high-rise is usually seen as faulty for affordable housing from past experiences, especially in huge public projects. However, Via Verde with high-rise component reverses it. With these conditions, Via Verde explosively attracts people, it was designed as rental units, surprisingly, people intend to buy them. Via Verde project wants to build a healthy lifestyle with mixed-income level community in order to address and revitalize poverty issue around South Bronx, resolving problems of health, and more sustainable and vigorous. As a model of affordable housing, Via Verde truly presents and illustrates the cooperation and collaboration between public and private sectors. However, there were difficulties in this development, residents are lack of knowledge in green notion, which is hard for them to adapt into recycling concept. The success of Via Verde is extraordinary, which leads impression changes in affordable housing. Real estate development has stridden forward to another level with higher quality, more comfortable design and planning of affordable housing. Challenges This is a massive project with huge number of units and unique requirements. It is difficult for developers to build 222 units into a narrow, triangle brownfield, which needs innovative and creative ideas to achieve. The model which includes all information has proved the feasibility of the development with acceptable financing and flexible development team and authorities. The aims are healthier lifestyle through recycling and more exercises and organic vegetable or fruit. However, difficulties are lack of knowledge in green lifestyle, and adapting into rules. Via Verde received lots of resources from public and private authorities. In order to replicate the same success from Via Verde, others need to consider about sources which may not be same as them. Conclusion The model of Via Verde development clear in information, however, it is ambiguous about difficulties, and how they convinced funding and planning and decision making. Real estate development is a wide and comprehensive scenario, which involves different kind of people, such as, developers, architects, agents, planners, government, and engineers to frame and accomplish. In this case study of affordable housing, stakeholders are mostly pubic authorities, they did not have significant problems. Except zoning issue that size of site didnt conform to the regular regulation, however, authority has given amnesty permission for it, additionally, parking issue, the flexibility of development has successfully coped with it. Once development is facing some issues, public and private sectors will need to figure out and adapt to solutions, and it would sufficiently prove the feasibility of development. The sustainability of development with persistent encouragement and learning is fundamental. Affordable housing isnt always like what we expect, it can be completely different and well with good development. This case study demonstrates how real estate development brings a long-term and sustainable notion into affordable housing through wide range of consideration. References Kwame, A. D., Liow, K. H., Neo, Y. S., 2009. Sustainability of Sustainable Real Property Development.   Sustainable Real Estate, [e-journal] 1(1). 203-225. Available through: University College London Library website [Accessed 18 December 2016]. ULI, 2014. ULI Case Studies-Via Verde. [online] Available at: [Accessed 20 December 2016].

Essay --

1. The SEC issued SAB No. 101, which provides guidance on recognizing, presenting and disclosing revenue in financial statements. SAB No. 101 is based on the principle that in companies’ financial reporting, revenue should not be recognized until it is realized or realizable and earned. Before revenue is recognized, the following criteria and conditions must be satisfied: notes that GAAP requires the following conditions to be satisfied: 1) Persuasive evidence of an arrangement must exist; 2) Delivery must have occurred or services been rendered; 3) The seller’s price to the buyer must be fixed or determinable; 4) The collectability should be reasonably assured. 2. Longeta recorded $5.8 million in revenue for the year ended September 30, 2009 out of the actual shipment of software product. The shipment of the software product to Magicon was made prior to the year-end, so Longeta treated the revenue associated with the sale of software as a current sale on the income statement. On the other hand, Longeta recorded the remaining $1.2 million as deferred revenue given that Longeta was liable to provide software support services in the future periods. Since the delivery of support services had not occurred, Longeta recorded the portion of the contract related to support services as deferred revenues. For the support services to be provided over the next 12 months, Longeta would record the present deferred revenue as a current liability on the balance sheet. If there were a commitment to provide services after 12 months, Longeta would record deferred revenues as a long-term liability on the balance sheet. 3. The separate letter issued by the vice president of sales exhibited that neither Longeta nor Magicon had agreed to the term... ... transaction with Magicon has violated GAAP related to revenue recognition. The reasons are listed as below: 1) There was no evidence showing that an arrangement existed. Neither Longeta nor Magicon had reached agreement on the terms and conditions of the sale. 2) There was no indication that the earnings process was complete or nearly complete. The separate agreement gave Magicon the right to cancel the order and relevant obligations. It could be inferred that no exchange of assets has taken place, since Magicon did not make any commitment to provide Longeta with anything. 3) Magicon was given the right to cancel its payments to Longta if no terms could be reached, which meant that no collection would be generated. In sum, neither the recording of the $5.8 million in revenue nor the $1.2 million in deferred revenue was in accordance with the principles of GAAP.

English language

II. In his 1946 essay, Politics and Language, George Orwell addresses the stagnation and misuse of the modern English language. In particular, Orwell addresses but does not limit his discussion to the use of language in the political spectrum. Increasingly, Orwell attempts to demonstrate, written language has become unnecessarily complicated and many times insensible. In describing particular offenses such as â€Å"dying metaphors,† â€Å"operators or verbal false limbs,† â€Å"pretentious diction,† and â€Å"meaningless words† Orwell shows how the meaning of ideas and the language itself is sometimes lost in the over-the-top prose of the writer.Orwell calls for a simpler turn to language, which doesn’t seek to necessarily eliminate particular turns of phrase or vocabulary but rather increases the precision of the words and to this extent the ideas. Instead of losing their ideas in convoluted sentences that say little and mean even less, Orwell call s on writers and politicians to express themselves with clarity and a familiarity with the language they choose to employ. III. Orwell addresses the misuse and overuse of language in political and general writing.He shows how writing or speaking in a manner that is seeks more to impress than express, modern writing increasing lacks imagination and coherence with the message frequently being lost in the words rather than being expressed by them. 2. Orwell’s conclusion is not to eliminate the language that is misused but instead to educate the writer in the misuse and to promote clarity in writing. 3. Orwell’s reasoning behind both his argument and his conclusion appear to be a love of language.While he admonishes overused metaphors, he presents several of his own throughout the text. He is not asking for perfect writing but rather an appreciation and an understanding of language and the ideas it is used to express. 4. N/A 5. N/A 6. Orwell presents several fallacies in h is argument, chief among them being the generalization of the five examples he presents at the beginning of the essay as indicative of modern writing. Also present is a faulty causal argument that connects the insincerity of politics and ideas with this kind of writing.However, it’s important to note that while simplifies this issue in this manner, Orwell also addresses these fallacies within his argument. He makes it clear that by dramatizing the prevalence of this type of language, he is simply attempting to better employ language to clearly express his ideas. 7. Orwell’s argument is largely based upon personal observation. There is the distinct feeling that while Orwell has support in this idea, especially when he notes the popular distaste among journalist for worn-out and uninspired metaphors.However, Orwell’s own observations of the over-done quality of academic and political writing. 8. Arguments could be made against Orwell’s claims on language, p articularly in his attacks on literary/art criticism or political literature. Literary and art critics coming from a particular school of thought could make the argument that in addressing their topics they must seek a new language to express their distinct interpretations. Politicians would make an argument against Orwell’s claims to their insincerity which they attempt to cover with language a lack of ideals or actual stance.N/A 10. There is much information omitted from Orwell’s argument, especially the writers who have not fallen to abusing and misusing language. However, as with the fallacies of his argument, Orwell is clear in noting that he is not speaking of all but rather drawing attention through a handful of examples to a growing trend. 11. Overall, Orwell presents a strong though admittedly biased argument. That it is Orwell himself who admits to this bias, illustrates the presence of his own ideals of clarity as beauty in language as a basis for the essay. My value assumption allows that there is a major basis of truth in Orwell’s argument and that the commonality of the types of language he rails against are as prevalent now as it was in 1946. 13. While the personal edge to Orwell’s argument could be seen as a drawback, I believe it instead highlights the very personal nature of language and how it is meant to express rather than suppress ideas. In his essay, Orwell is advocating for this expression and a strengthening of language through proper use and clear understanding. 14. Orwell’s essay remains as valuable today as it was in 1946.He could not have predicted and would likely be disheartened that despite his call to lingual arms that society and politicians continue to use â€Å"dying metaphors,† â€Å"operators or verbal false limbs,† â€Å"pretentious diction,† and â€Å"meaningless words. † However, his lessons of clear, simplistically beautiful prose is as needed to today as it was 60 years ago. Politicians and regular people alike still hide behind overblown and misunderstood language, failing to understand their own words and creating ignorance as the rest of the world struggle to understand as well.

Saponifacation of Ethyl Acetate and Soldium Hydroxide

Ethyl Acetate – NaOH Reaction Kinetics Experiment Martin Novick Group 14, Chemical Engineering Laboratory Submitted to Prof. David B. Henthorn September 25, 2012 Summary The goal of this project was to determine the pre-exponential factor, k o , the activation energy, E, and the reaction rate constants, k, of the saponification process of ethyl acetate using sodium hydroxide (NaOH) at 5 temperature between 15 and 25 degrees Celsius. Two trails were performed at temperatures 16, 18, 20, 22, and 24 degrees Celsius. The main equipment of the project were the jacketed beaker batch reactor and the LabPro conductivity probe.The solution’s conductivity throughout the reaction was collected and plotted in a linearized plot against time to retrieve value for each trial. The rate law was assumed to be = , where and are the concentrations of sodium hydroxide and ethyl acetate respectively. The ln? k) values were plotted against the inverse temperatures to ( linearize the Ar rhenius equation. The k o value and E value from the linearized Arrhenius plot were found to be 15  ± 3M ? 1 s ? 1 and ? 6402  ± 8191? j ? mol? 1 respectively. The E value being negative suggests the reaction is exothermic. The large standard errors of the and values were probably caused by the low number of data points collected or the assumed rate law was wrong. Introduction The objective of this project was to determine the pre-exponential factor, k o , the activation energy, E, and the reaction rate constants, k, of the saponification process of ethyl acetate using sodium hydroxide (NaOH). Saponification is a chemical process heavily used in industry, especially in soap production.Knowing the effects of temperature on the reaction rate allows better control over the reaction process and find the optimizing point of production. The right temperature maximizes production and minimizes reactants and heating or cooling energy, finding the maximum possible profit. 2 The saponif ication of ethyl acetate with sodium hydroxide (NaOH) is an equi-molar reaction given as NaOH + CH3 COOCH2 CH3 > CH3 COONa + CH3 CH2 OH. [2] The rate was assumed to be second order overall, but first order relative to either reactant,[2] with the disappearance rate of sodium hydroxide given as:[4] dCOH = ? COH Cac , dt (1) where COH is the NaOH concentration, Cac is the concentration of ethyl acetate, and k is the rate constant. COH is represented with x, and Cac is assumed to be in excess with a starting concentration of a. The concentration of ethyl acetate throughout the reaction was given as Cac = a ? xo + x, where xo is the initial starting concentration of NaOH. Substituting the expressions for COH and Cac into Equation 1 results in: dx = ? kx(a ? xo + x). dt Equation 2 is then separated and integrated shown as the following: ? t dx = ? k ? dt. xo x(a ? xo + x) 0 x (2) (3)The result of equation 3 would become: ln ( xo (a ? xo + x) ) ax = kt. a ? xo (4) Since a 20% excess ethyl acetate solution was used, the initial ethyl acetate concentration was 1. 25 times of the initial starting concentration of NaOH, so a = 1. 25xo . After the substitution of a = 1. 25xo , Equation 4 was simplified to: 3 0. 2x ln ( x o + 0. 8) = kt. 0. 25xo The relationship between xo x (5) and conductivity of the solution was given as:[2] ? = , ? (6) where is the initial conductivity of NaOH before adding ethyl acetate, s the conductivity after the reaction has reached completion, and is the conductivity at any point of time during the reaction process. Substituting Equation 6 into Equation 5 gives the following: ? ln (0. 2 ? ? + 0. 8) ? = kt. 0. 25xo (7) Since , and are constants, the only variable in the left hand side of Equation 7 being . Each point can be substituted into the left hand side of Equation 7 and plotted against time to retrieve a linear plot with the slope being the k value. To find the value of the pre-exponential factor, and activation energy, , would require linearizing the Arrhenius equation given as: k = k o , where R is the gas constant and T is the temperature the given k is at in degrees Kelvin. Equation 8 is linearized by taking the natural log of both sides: ln(k) = ln(k o ) ? E . RT 1 (8) (9) to retrieve a linear plot with Equation 9 shows a linear relationship between ln(k) and 4 the y-intercept being ln( ) and the slope being . Hence: k o = ey? intercept . = ? (10) (11) Equipment, Materials, and Method The equipment used were a jacketed batch reactor beaker, cooling water circulation system, computer, LabPro temperature probe and conductivity probe, mixing stand and magnetic stir bar. The materials used for this reaction were a 0. 08M NaOH solution and a 0. 1M ethyl acetate solution. A 20% excess Ethyl acetate was used to ensure NaOH was the limiting reactant. [1] NaOH was chosen for the limiting reactant because of its high conductivity relative to Ethyl acetate. The extent of the reaction was monitored by measuring the conductivity throughout the reaction.With NaOH being the limiting reactant, the change in conductivity is more visible, and the termination of the reaction can be more easily observed. The each experimental trail was setup as shown in Figures A1 and A2 of Appendix A. The temperature and conductivity probes were completely submerged under the surface of the reacting solution. One data reading was retrieved per second. Before the reaction process begun, the cooling water circulation system was set at desired temperature and the reactants were cooled to the target temperature to keep an 5 isothermal reaction environment.In Equation 8, the k value was only a function of temperature; if temperature varied throughout the reaction, the k value would also vary throughout the reaction. The reaction was started once thermal equilibrium between the batch reactor beaker and cooling water was established. For about the first half a minute, only the conductivity of NaOH in the r eactor was collected, to ensure the initial conductivity in conductivity was more easily observed. The initial conductivity was the first conductivity point after the major drop of conductivity due to the addition of ethyl acetate.The reaction was started after about half a minute after the start of the data collection by adding the ethyl acetate. The solution was well mixed throughout the reaction to ensure a uniform temperature of the solution, to prevent any local k values being different from the overall k value. If there any temperature gradients throughout the system existed during the reaction process, there would be different local k values throughout the reactor. Data collection was terminated at least half a minute after the reaction had gone to completion, when no conductivity change was observed.The final reaction completion conductivity, , was the conductivity of the solution after the reaction has completed, and was used to find k value. Hysteresis effects were remove d by using a random number generator to determine the order of trials. 6 Results and Discussion 1. 2 1. 1 1 0. 9 ln(k) 0. 8 0. 7 0. 6 0. 5 0. 4 0. 3 0. 00335 0. 00337 0. 00339 0. 00341 1/T (T-1) y = -4378. 4x + 15. 713 R? = 0. 7383 0. 00343 1 0. 00345 0. 00347 Figure 1 the plot of the linearized Arrhenius equation where ln( ) . The linearized Arrhenius equation plot shown in Figure 1 has a R2 value of 0. 383 suggesting the data does not have a good linear fit. The lack of data points may have been the cause of the low R2 value. The ln(k) values of the same temperature mostly seem to have small variations, but overall has the predicted trend of decreasing in ln(k) value as ?1 increases. The plot has a negative overall trend with and hence retrieving a negative E value. The negative E value suggests the release of energy as the reaction proceeds. Table B1 in appendix B shows the retrieved values of k, ko and E. The positive ko value was expected according to Equation 8.Since k valu es are linearly proportional to ko, for k values to be positive, ko must also be positive. The resulting negative E value was an expected result, since the reaction was said to be very spontaneous. The standard errors of ko and E being about 20% to 25% of the original value, suggests the data as imprecise. The imprecision of the data can also be observed from the low R2 value. 7 Looking at the imprecision of the plot in Figure 1, there is a notable difference between the k values at the same temperature for = 0. 003364 (24oC) and 1 1 = 0. 03455(16oC). This may be due to the variance in concentration of solutions since solutions were remade each laboratory day. Another possible cause maybe that the contents of solutions may have reacted with the atmosphere introducing extra contents to the reaction. The k values all have standard errors less than 1%. Figures B1 to B5 of Appendix B shows the plots of ln( 1 ( +1)) 1. 25 0. 25xo used to find the k values at each temperature. The p lots all have a positive trend which is reasonable according to Equation 7.The resulting slope is the k value of that trial, and the k values cannot be negative. Also the R2 values of the plots were all above 0. 95, suggesting a good fit with the linear best fit line model. Despite the high R2 values, the a clear parabolic trend was observed in all the residual plots shown in Figures B6 to B14 of Appendix B, the linear property of the plots are questioned. Figure B15 of Appendix B shows an example plot of the full data from 16oC trail 1. A clear linear trend was observed from the beginning of the plot, but an obvious curve was observed from the end of the plot.This observation was probably due to the fact that as the reaction proceeded, the reaction started behaving like a first order reaction. The first order reaction behavior is because near the end of the reaction of the excess ethyl acetate concentration was much greater than the NaOH concentration and can be treated as a consta nt. With the concentration of ethyl acetate being constant the only resulting variable would be 8 the NaOH concentration. Conclusion and Recommendations The retrieved ko value and E value were 15  ± 0. 3 and ? 36402  ± 8191.Since the standard errors of ko and E values were about 20% and 25% of the original value respectively, and the R2 value was only 0. 7383 for the plot in Figure 1, the data is concluded to be imprecise and that more data points should be collected to improve the precision. The assumption of the rate being second order overall, but first order relative to either reactant was concluded to be inappropriate. Though the R2 value for all the trials were above 0. 95, because a clear parabolic trend was observed in all the residual plots, Figures B6 to B14 of Appendix B, it was concluded that all the trial data do not have a linear relationship.Since it has been concluded that the assumed rate equation, Equation 1, does not describe the reaction, a new rate equation is needed to describe the reaction. The low R2 value in Figure 1 can be improved by increasing the amount of data collected. More trails can be done at each temperature and more temperatures can be tested within the given interval. One large bulk solution can be made and used for all the trails, but stored and isolated from the atmosphere. The error caused by the variation in concentrations of the reactants at different trails can be solved by using the one large bulk of reactants.The problem of the reactants reacting with the atmosphere can be solved by isolating the reactants from the atmosphere during storage. 9 References [1] Crismyre, Bobby, Do, Bryan, and Kronmiller, Mandy. â€Å"Ethyl Acetate – NaOH Reaction Kinetics Experiment Standard Operating Procedures,† (2010) [2] Julio F. Mata-Segreda, Hydroxide as a General Base in the Saponification of Ethyl Acetate. Journal of the American Chemical Society, (2010), 124 (10), 2259-2262. [3] Keusch Fachdidaktik Chemie. à ¢â‚¬Å"Reaction Second Order,† Institute of Organic Chemistry, Universitat Regensburg. [4] Schmidt, Larry D. â€Å"The Engineering of Chemical Reactions,† 2 Ed.Press, New York (2005) Oxford University 10 APPENDIX A: Experimental Set Up Figure A 1: Shows the theoretical setup and flow of each experiment. Figure A 2: Shows the actual set up used for each experiment. 11 APPENDIX B: Experimental Results and Data Table B 1 shows the result of the desired information Set Temperature (oC) 16 (Trial 1) 16 (Trial 2) 18 (Trial 1) 20 (Trial 1) 20 (Trial 2) 22 (Trial 1) 22 (Trial 2) 24 (Trial 1) 24 (Trial 2) ( 1 ?1 ) ( ) Actual Temperature (oC) 16. 45  ± 0. 05 16. 44  ± 0. 04 18. 33  ± 0. 03 20. 30  ± 0. 05 20. 30  ± 0. 5 22. 24  ± 0. 04 22. 25  ± 0. 05 16. 45  ± 0. 05 16. 45  ± 0. 05 15  ± 3 ? 36402  ± 8191 k-values ( 1 min? 1 ) 1. 674 ±0. 001 2. 023 ±0. 001 1. 921 ±0. 002 2. 241 ±0. 002 2. 247 ±0. 003 2. 244 ±0. 006 2. 169 ±0. 002 2. 572 ±0. 003 3. 140 ±0. 002 12 25 20 y = 2. 0232x R? = 0. 9994 15 Y (L/mol) y = 1. 6744x R? = 0. 9972 10 5 0 0 2 ln( 1 ( +1)) 1. 25 4 6 Time (min) 8 ln( 10 1 ( +1)) 1. 25 12 Figuer B 1 Plot of 0. 25xo at 16 degrees Celsius, where = 0. 25xo . 16 14 12 10 8 6 4 2 0 0 -2 ln( 1 +1)) 1. 25 y = 1. 9206x R? = 0. 9974 Series1 Linear (Series1) 1 2 3 4 5 6 7 8 Figuer B 2 Plot of 0. 25xo at 18 degrees Celsius, where = ln( 1 ( +1)) 1. 25 0. 25xo . 13 25 y = 2. 247x R? = 0. 9964 y = 2. 2407x R? = 0. 9982 Y (L/mol) 15 Trial 1 Trial 2 10 Linear (Trial 1) Linear (Trial 2) 5 20 0 0 2 4 6 Time (min) 1 ( +1)) 1. 25 1 ( +1)) 1. 25 8 10 12 Figuer B 3 Plot of ln( 0. 25xo at 20 degrees Celsius, where = ln( 0. 25xo . 0 18 16 14 Y (L/mol) 12 10 8 6 4 2 0 0 2 4 Time (min) 1 ( +1)) 1. 25 1 ( +1)) 1. 25 y = 2. 244x R? = 0. 9909 y = 2. 1687x R? = 0. 9985 Trial 1 Trial 2 Linear (Trial 1) Linear (Trial 2) 6 8 10 Figuer B 4 Plot of ln( 0. 25xo at 22 degrees Celsius, where = ln( 0. 25xo . 14 25 20 y = 2. 5723x R? = 0. 9982 15 Y (L/mol) y = 3. 1405x R? = 0. 9992 Trial 1 Trial 2 Linear (Trial 1) Linear (Trial 2) 10 5 0 0 1 2 3 4 Time (min) 5 6 7 8 Figuer B 5 Plot of ln( 1 ( +1)) 1. 25 . 25xo at 24 degrees Celsius, where = ln( 1 ( +1)) 1. 25 0. 25xo . X Variable 1 Residual Plot 0. 8 0. 6 Residuals 0. 4 0. 2 0 -0. 2 -0. 4 0 2 4 6 X Variable 1 8 10 12 Figure B 6 The residual plot for 16 degrees Celsius Trial 1. 15 X Variable 1 Residual Plot 0. 6 0. 4 Residuals 0. 2 0 -0. 2 -0. 4 0 2 4 6 8 10 12 X Variable 1 Figure B 7 The residual plot for 16 degrees Celsius Trial 2. X Variable 1 Residual Plot 0. 8 0. 6 Residuals 0. 4 0. 2 0 -0. 2 -0. 4 0 1 2 3 4 X Variable 1 5 6 7 8 Figure B 8 The residual plot for 18 degrees Celsius Trial 1. X Variable 1 Residual Plot 0. 8 0. 6 Residuals 0. 4 0. 2 0 -0. 2 0 -0. 4 -0. 6 X Variable 1 2 4 6 8 10 12 Figure B 9 The residual plot for 20 degrees Celsius Trial 1. 16 X Variable 1 Residual Plot 1. 5 1 Residuals 0. 5 0 0 -0. 5 -1 X Vari able 1 2 4 6 8 10 12 Figure B 10 The residual plot for 20 degrees Celsius Trial 2. X Variable 1 Residual Plot 1. 5 1 Residuals 0. 5 0 -0. 5 -1 0 1 2 3 4 5 6 7 8 X Variable 1 Figure B 11 The residual plot for 22 degrees Celsius Trial 1. X Variable 1 Residual Plot 0. 8 0. 6 Residuals 0. 4 0. 2 0 -0. 2 -0. 4 0 1 2 3 4 5 6 7 8 9 X Variable 1 Figure B 12 The residual plot for 22 degrees Celsius Trial 12 7 X Variable 1 Residual Plot 1 Residuals 0. 5 0 0 -0. 5 1 2 3 4 X Variable 1 5 6 7 8 Figure B 13 The residual plot for 24 degrees Celsius Trial 1. X Variable 1 Residual Plot 0. 6 0. 4 Residuals 0. 2 0 -0. 2 -0. 4 0 1 2 3 4 X Variable 1 5 6 7 8 Figure B 14 The residual plot for 24 degrees Celsius Trial 2. 140 120 100 Y (L/mol) 80 60 40 20 0 0 5 10 15 20 25 30 35 40 45 Time (min) Figure B 15 The plot of all the data from 16oC trail 2 18 APPENDIX C: Sample Calculations Volume of 1M NaOH solution needed to prepare 300mL 0. 08M NaOH solution: 0. 3 ? 0. 08 = 0. 024 = 24 Volume of ethyl acetate needed to prepare a 300mL 0. 1M ethyl acetate solution: 1000 88. 105 3 0. 001 0. 10 ? ? ? ? ? 0. 3 = 2. 96 0. 897 3 Finding E value: Calculating the k value for time being 1 minute in trial 2 of 16 degrees: = ? = ? 2904. 9 ? 8. 3145 = ? 24153 1 ? ln ( ( + 1)) 1. 25 ? 0. 25xo 1 16324. 71 ? 4698. 16 ln ( ( + 1)) 1. 25 8259. 03 ? 4698. 16 0. 25(0. 8) = kt = = 14. 89 19APPENDIX D: Error Analysis If the result (R) is calculated by the following equation: = ? where is the exponent of the independent variable, . The standard error would be calculated by the following equation: 2 2 = (? ( ) ) 1 (1) (2) where is taken from equation 5, is the standard error of each individual independent variable. Since the equation used is the following: ? ln (0. 8 ( ? ? + 1)) ? 0. 25 = , 3) where is the rate constant, is the initial conductivity, is the conductivity at the end of the reaction, is the conductivity at any time, and is the initial concentration of the NaOH s olution. The error of the right hand side of equation 3 with = 36. 662 is show as the follow: 36. 662 (( 0. 0339 ) ) = 15. 536. 0. 08 1 2 2 was given the value of 0. 08 with an uncertainty of  ±0. 0339. The reaction rate constant, k, were found by the best fit line of the plot, so the uncertainty of the k were found by taking the linear regression.The rate constant was the slope of the best fit line making the calculation of the error with a 95% confidence level as: = 1. 96 ? , v? 2 ? 2 Where , is the standard error of estimate, is the x values of the plot, n being the number of points, and = ? =1 , (4) . As for the y intercept, or the activation energy, the error with a 95% confidence level would be: 20 = 1. 96 ? , v 1 (? )2 + 2 , (? 2 ? 2 ) (5) Where , is the standard error of estimate, is the x values of the plot, n being the number of points, and = ? =1 . The standard error of estimate, , , seen in both equation 4 and equation 5 is given as: , =v ? ( ? )2 , ? 2 (6) where is the y value of the points, is the corresponding y value on the best fit line, and n is the number of data points.