10‚ 2014 Lab # 4: Melting Point lab Partner: Instructor: The Testing of the Melting Points of p-dichlorobenzene and naphthalene Introduction: Melting point temperature is a physical property of pure substances. It is an intensive property‚ which means the amount of material tested is irrelevant. This lab will determine the melting point temperatures of two known pure substances‚ naphthalene and p-dichlorobenzene‚ using micro-sized quantities and a capillary melting tube apparatus. The
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IB1 Chemistry Practical #8 ANALYSIS OF ASPIRIN TABLETS For a long time the bark of the willow tree (salix alba) was used as a traditional medicine to relieve the fever symptoms of malaria. In the 1860’s chemists showed that the active ingredient in willow bark is salicylic acid (2-hydroxybenzoic acid) and by 1870 salicylic acid was in wide use as a pain killer (analgesic) and fever depressant (antipyretic). However‚ because it is a relatively strong acid‚ salicylic acid has the undesirable side effect
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alternative to aspirin. Such a positioning will be able to attract current aspirin customers to Datril. The marketing campaign should focus on physicians‚ trade and patients. It should stress the information of little side effects compared to other analgesic medicine. Both the retail price and the trade price should be lower than Tylenol. Segmentation and targeting: Datril should target on aspirin users. Datril potential clients could be 1) people currently using aspirin 2) people currently
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Liquid Chromatography Analysis of Aspirin Problem: Was aspirin (acetylsalicylic acid) successfully synthesized? Are there impurities or by-products present in the synthesized aspirin? How pure is the synthesized aspirin? Introduction: In the last experiment‚ aspirin was synthesized followed by characterization of the product using several different techniques. Melting point was a test that provided information about the identity and purity of the aspirin product. The iron(III)chloride test
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blend into a new‚ virtuous community. The exact term "The Melting Pot" came into general usage in 1908‚ after the premiere of the play “The Melting Pot” by Israel Zangwill. The melting pot is a theory used to describe the American society in its first years. In the very beginning‚ the settlers in the “New World” had to create a totally new nation from many different origins and the proximate result of this situation was the birth of the melting pot theory. The idea behind it is that every immigrant
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report discussing the purity of my aspirin sample I produced. When I carried out the experiment to produce an aspirin sample I had to take a few results I had gained from carrying out the experiment later used these to work out the experimental error and percentage % yield. The results I used where the published value of what temperature pure aspirin melts at‚ the temperature my aspirin sample melted at‚ the weight of pure aspirin and the weight of impure aspirin. Firstly I worked out the experimental
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language‚ ate different foods‚ dressed differently‚ and lived a different lifestyle is a huge sacrifice in itself. Achieving the American dream was their goal. The two different views of America could change a whole country. The poster represents the "Melting Pot" America. The immigrants were to blend into the American culture and society. Rather than bringing their old country into America‚ and changing it. The poster is promoting to "Keep America Great‚" and "Learn the Language." The article states
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Commercial Aspirin Tablet Analysis Tuesday Evening Intro: The purpose of this lab was to analyze commercial aspirin tablets. To do so‚ the percent acetylsalicyclic acid (active ingredient) in tablets using acid-base titration was determined‚ the percent acetylsalicyclic acid in tablets by formation of a colored iron(III)-salicylate complex was determined using spectrometry‚ and then the percents from each process was compared. Acetylsalicylic acid is produced when salicylic acid and acetic
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Synthesis of Aspirin (Acetylsalicylic Acid) Abstract: This experiment is about the synthesis of aspirin under laboratory conditions. Aspirin is prepared by reacting salicylic acid and acetic anhydride; in the presence of sulfuric acid. After fully dissolving the salicylic acid with acetic anhydride‚ the solution is cooled and cold water is then added. Once the crystals form they are then filtered and left to dry out. There mass is measured and recorded then the yield is calculated. Introduction:
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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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