Abstract The objective of this experiment was to observe multi-step purification of benzoic acid after performing the extraction from a mixture containing benzoic acid‚ cellulose‚ and methyl orange. Recrystallization was done to remove impurities from the sample. The amount of BA recovered during recrystallization is much less than the extracted amount of BA. The difference between the pure and impure samples was observed by comparison of melting points. It was found that impure samples will have
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side with the country of origin‚ but are they correct in their opinion? Just as stated‚ it is their opinion. The following gives way to my beliefs that the Elgin Marbles should stay at the Duveen Gallery in Britain. The first section seeks to credit Lord Elgin and a legitimate purchase. The second section revolves around the Elgin Marbles as a symbol of Greek identity and why keeping them in Britain makes sense. Finally‚ the third section focuses on the location of the antiquities in relation to
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To Stacy‚ From Stacy Marketing and Stacy ’s Pita Chip Company Marketing is not just about selling and advertising products and services. In general‚ marketing is associated with identifying the particular wants and needs of a target market of customers‚ and then working to satisfy those customers better than the competition. This involves doing market research on customers‚ analyzing their needs‚ and then making strategic decisions about product design‚ pricing‚ promotion and distribution or
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lab‚ caproic acid was synthesized in a multi-step process that involved the synthesis of three intermediates – diethyl n-butylmalonate‚ potassium n-butylmalonate‚ and n-butyl malonic acid respectively. An IR was used to characterize the starting material‚ n-bromobutane‚ and the first intermediate‚ diethyl n-butylmalonate; while IR and NMR were used to characterize the final product‚ caproic acid. Reactions‚ Mechanism and Theory Caproic acid a.k.a n-hexanoic acid is a carboxylic acid derived from
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EXPERIMENT 13： Extraction: Extraction with acid and alkali Objective 1. To recover the benzoic acid and p-dichlorobenzene from its mixture from its mixture by using acid-alkali extraction. 2. To determine the percentage recovery and melting point of the recovered benzoic acid and p-dichlorobenzene. Introduction Acid-base extraction is a process which purifying the acids and bases from mixtures based on their chemical properties. Acid-base extraction is performed to isolate the compounds and natural
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including plantain chips. On her way to work she buys two packs and another two packs on her way home. She does this week in week out. I remember on one occasion on our drive to the office she bought a certain brand of plantain chips for everyone in the car. On another occasion‚ as we rode to the office she bought plantain chips for everyone in the car but I noticed she bought a different brand of plantain chips. As she motioned to the “traffic entrepreneur” carrying the brand of chips she wanted‚ I noticed
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Experiment # 3 Acetylsalicylic Acid Introduction: The purpose of this experiment is to create and isolate pure acetylsalicylic acid from the substances salicylic acid and acetic anhydride. Then one will find the melting point to determine purity. Procedure: Make a hot bath. Weigh some salicylic acid and place in conical vial. Add .480mL of acetic anhydride and a drop of concentrated phosphoric acid. Drop in a magnetic spin vane and attach air condenser to vial. Partially submerge it in
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Mabel M. Kimble September 21‚ 2014 Chemistry 234 Recrystallization of Benzoic Acid ABSTRACT The recrystallization of Benzoic Acid was performed to fully master the ability to purify a solid compound. This form of purification technique is especially important in chemical identification‚ where the melting point of the compound is taken to confirm its purity. In order to perform recrystallization a solubility test much be completed. Four solvents (95% Ethanol‚ Petroleum Ether‚ Acetone and distilled
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Abstract The aim of this experiment was to determine which of the samples of vinegar if any had been watered down‚ to complete this task a sample of commercial vinegar was tested twice using titration and an average was taken of the two samples to give a base line to compare the potentially tampered samples against. Introduction Vinegar is a solution made from the fermentation of ethanol (CH3CH2OH)‚ which in turn was previously fermented from sugar. The fermentation of ethanol results in the production
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Some school districts around the United States are considering putting tracking chips in their students I.d. cards. I have to disagree with this idea for many obvious reasons. With all the new technology out there it would not be difficult for anyone to hack into the schools system and find out the locations of any student. It’s an invasion of privacy and goes against the first Amendment rights. A system to keep track of that many students would be very expensive for schools with low budgets. A
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