Aspirin & Flavoring Esters Lab - Caleb Jones CH 114 3...

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Caleb Jones CH 114 3 November 2009 Results Table 1: Class Percent Yield of Aspirin Mass of Salicylic Acid (g) Mass of Aspirin (g) Percent Yield of Aspirin 2.00 1.042 79.5% Our percent yield was fairly high for this experiment. Incorrect procedure, such as spill- ing any of the solutions is the most likely cause for reducing our percent yield. Another signific- ant source of error was the point at which the aspirin was precipitated in the test tube. Many of the groups with low percent yields may not have induced enough precipitation. Therefore, they were not able to extract the maximum amount of aspirin from the solution. Characterization of Aspirin and Salicylic Acid The first test performed on the samples was the ferric chloride test, which tested for the presence of phenols. Phenols, which consist of hydroxyl groups bonded to phenyl rings, are a primary component of salicylic acid and aspirin. In the presence of phenols, ferric chloride ex- periences a color change. In particular, the Fe
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This note was uploaded on 06/25/2011 for the course CHEMISTRY 115L taught by Professor March during the Spring '10 term at University of Alabama at Birmingham.

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Aspirin & Flavoring Esters Lab - Caleb Jones CH 114 3...

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