Store the Aspirin in the Desi-cooler and determine the percent yield of the synthesis by taking the actual yield and dividing it by the theoretical yield determined. A percent yield of 90. Using the molar mass of aspirin you get the number of moles of aspirin produced.
And heres how you calculate percent yield.
What was the percent by mass of aspirin in the tablets. R 1 Acid Salicylic Acid R 2 Alcohol Acetic anhydride. Actual yield is the amount of product empirically produced after conducting. You then just divide your obtained yield by the theoretical yield and 100.