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Lab 1 - aspirin

Lab 1 - aspirin - Jin Bae CHEM-242L Synthesis of Aspirin...

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Jin Bae CHEM-242L Synthesis of Aspirin Performed: 1/25/2007 Written: 1/30/2007 Purpose The purpose of this lab is focused on the synthesis of aspirin, and determines its state of purity. Reactions Tables of Reactants and Products Name Appearance M. point B. point Molar W Density Salicylic acid 160 °C 211 °C 138.12 g/mol 1.44 g/cm³ Anhydrous sodium acetate Decomposes at 324 °C Decomposes 82.03 g/mol Acetic anhydride −73.1 °C 139.9 °C 102.1 g/mol pyridine −41.6 °C 115.2 °C 79.10 g/mol Boron trifluoride etherate −126°C −100.3°C 67.8062 g/ mol 2.178 g/m 3 Sulfuric acid 10°C 338°C 98.08 g/mol FeCl 3 306°C 315°C 162.21 g /mol 2.80 g/cm 3 Procedure Part 1 1.0g of salicylic acid and 2.0ml of acetic anhydride was added to four separate test tubes. To the first test tube, 0.2g of anhydrous sodium acetate was added, and the time required for a 4 degree rise in temperature was measured. For the second test tube, third test tube, and fourth test tube, five drops of pyridine and five drops of boron trifluoride etherate and five drops of sulfuric acid, respectively was added and the time for a 4 degree rise in
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Jin Bae CHEM-242L temperature was also measured. All test tubes after it was placed in a beaker with hot water to dissolve all of the solid material, and then placed into 125mL Erlenmeyer flask containing 50mL water. The flask was then cooled down thoroughly in an ice bath for
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