Question

A. Preparation of Aspirin Al Mass of flask Mass of flask and salicylic acid A.2 Mass of watch glass Mass of watch glass and crude aspirin product 71.682g 726729 30.487a 32 1163 1.590g Calculations A.3 Mass of salicylic acid A.4 Maximum possible yield of aspirin Show calculations 1629g A.5 A.6 Mass of aspirin observed Percent yield Show calculations 137.7°C A.7 Melting point in °C of aspirin product Questions and Problems Q.1 Draw the structural formula for aspirin. Label the ester group and the carboxylic acid group. 0.2 If a typical aspirin tablet contains 325 mg aspirin (the rest is starch binder), how many tablets could you prepare from the aspirin you made in lab? 5449

please help to solve

Answer 1

solution: — и - он Com m/2 = 138 12 1 glmole m/2=180.15 8 gl mole. 1.59 gm 1.62gn. Reaction done on 159 gm. given wt- of starting 1.59 gm mole = - 0.0115 mole molecular-wet- of starting 138:12 1 glmole .. Therotical yield - a field = 0.0115 molex 0.0115 molex molecular molecular wt of product -0.0115 mole X 180-158 g 1 mole = 2.073gm Maximum posible yield of Aspasin is - Actual yield Percentage yield = Therotical field 2.093 gm. xloo 1.62 gm - X 2.073 gm 100 - 78.14% ... 7. yield of at aspurin is 198.14% ok Carboxylic group K Carboxylic group Ester group