Titration- Analysis of Aspirin Tablets Objective: Determine the percentage of aspirin (acetylsalicylic acid) present in two different commercial tablets by titrating the solution with a base. Also determine whether the aspirin is a strong or weak acid according to the Bronsted- Lowry and Lewis theories and deduce the formula of the acid- base reaction. Independent Variable: The amount of base (NaOH) in moles that are needed to neutralize the solution. Dependent Variable: Percentage of aspirin (acetylsalicylic
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Abstract: The goal of this experiment was to synthesize aspirin. In this experiment aspirin‚ also known as acetylsalicylic acid‚ was synthesized from salicylic acid and acetic anhydride. In the reaction the hydroxyl group on the benzene ring in salicylic acid reacted with acetic anhydride to form an ester functional group. This method of forming acetylsalicylic acid is an esterification reaction. Since this esterification reaction is not spontaneous‚ sulfuric acid was used as a catalyst to initiate
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approx.15 ml of 1mol/L Na2CO3 solution.Shaked‚drained and discarded the lower layer leaving the ester in the separating funnel. Diagram : Observations : From our results‚the ester we made produced a light banana smell. In this experiment for preparation of an ester as the alcohol used was pentanol and the acid used was glacial acetic acid‚ added conc.sulfuric acid a dehydrating agent used to remove the moisture‚ safety was a priority in this experiment as this were all highly poisonous‚highly
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Interview Project Report Your name: Your partner’s name: PART 1. IntervieweE report Name of the company: Ritz Carlton Note: The company must be the organization you chose for your Media Case Project. Interview preparation Complete the following: Your spokesperson function in the company. Explain why this spokesperson is best suited to handle this specific interview‚ based on the information provided by the journalist. The spokesperson is the CEO because he is the best person to
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acidity of the catalyst‚ the production of aspirin will increase. Our hypothesis was proven correct. In our data‚ we calculated the percent yield and percent error of each trial. We also calculated the average of the percent yields and the percent errors of each catalyst. In the end‚ we saw that for the sulphuric acid catalyzed aspirin‚ we saw an average of 69.7% percent yield and an average 30.3% percent error. As for the phosphoric acid catalyzed aspirin‚ we saw an average of 55.0% percent yield
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the interview. Reviewing your resume in an interview will only result in boring the interviewer‚ inadvertently lowering your chances to become the succeeding candidate. Preparation is the key to success in approaching the opportunity of the job interview. According to article 1‚ there have six key steps in job interview preparation. The first step is know the company. The second step is research the people. The third step is find an insider. The fourth step is know what’s coming. The fifth step
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20 – 03 – 13 EXPERIMENT: - PREPARATION OF POLYURETHANES AIM Synthesis of polyurethanes OBJECTIVES - Mixing a diisocyanate and a diol in polyurethane synthesis of two distinct products. - Comparing polyurethane from castor oil to that made from polyethylene glycol. - To establish the type of foams in terms rigidity or flexibility. THEORY Polyurethanes‚ also known as polycarbamates‚ belong to a larger class of compounds called polymers. Polymers are macromolecules made up
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continue their education‚ even to the baccalaureate level (Stokowski‚ 2011). This multiple pathway to nursing can sometimes pose as a challenge to aspiring nurses who are not sure which pathway to choose. In making a decision for the educational preparation of nursing‚ one has to know the pros and cons of each entry route so as to facilitate better decision making. The nursing diploma is a 3-year diploma program typically administered in hospitals. This route was once the most popular in the United
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OF PURE AND APPLIED CHEMISTRY Visayas State University Visca‚ Baybay City‚ Leyte Name: Alecsa May S. Celaya BS-Chemistry 3 Date Submitted: December 19‚ 2014 Lab. Schedule: MW 2:00 – 5:00 pm Rating: Group No. 11 Experiment No. 5 Preparation of KAl(SO4)2•12H2O (Alum) OBJECTIVES This experiment aimed to: prepare KAl(SO4)2•12H2O‚ commonly referred to as alum‚ from aluminum metal from a canned soft drink‚ and determine the mass of the alum collected and its percent yield. METHODOLOGY
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Preparation Outline Topic: The various usage of photography Specific purpose: To inform my audience about the various usage of photography Central idea: Thus‚ I would like to share with you about the various usage of photography Introduction I. Before I go further with my presentation‚ let me show you a photo A. Have you seen this photo before? B. What you get when you look at this photo once? C. Do you agree with me if I say this photo deliver information directly by just looking
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