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Unformatted text preview: This was done to slow the movement of molecules in the mixture to allow the formation of acetylsalicylic acid crystals to form. Acetic acid was also formed in the reaction, and to get rid of most of it, the cooled mixture was vacuum filtered through a Buchner funnel with pre-weighed filter paper and washed three times with cold, distilled water. During the vacuum suction, a significant amount of solid acetyl salicylic acid crystals were also filtered through the funnel and into the waste flask below, which may account for the low % yield of the final product. The solid crystals and filter paper were then transferred to a pre-weighed watch glass, covered with a Kim wipe, and stored for one week. A week later, the mass of the synthesized product was calculated to be 1.7931 grams, and still included an impurity, acetic acid....
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This note was uploaded on 04/02/2012 for the course GER 38645 taught by Professor Horton during the Spring '08 term at University of Texas at Austin.
- Spring '08