To calculate the percentage yield of aspirin, we first need to determine the theoretical yield of aspirin based on the limiting reactant, which in this case is salicylic acid.1. Write the balanced chemical equation for the synthesis of aspirin:C7H6O3 salicylic acid + C4H6O3 acetic anhydride C9H8O4 aspirin + C2H4O2 acetic acid 2. Calculate the molar mass of salicylic acid and aspirin:Salicylic acid: C7H6O3 = 7 12.01 + 6 1.01 + 3 16.00 = 138.12 g/molAspirin: C9H8O4 = 9 12.01 + 8 1.01 + 4 16.00 = 180.16 g/mol3. Calculate the moles of salicylic acid:moles = mass / molar mass = 5 g / 138.12 g/mol = 0.0362 mol4. Determine the theoretical yield of aspirin:Since the stoichiometry of the reaction is 1:1, the moles of aspirin produced will be the same as the moles of salicylic acid used.mass of aspirin = moles molar mass = 0.0362 mol 180.16 g/mol = 6.52 g theoretical yield Now, we need the actual yield of aspirin obtained from the experiment. The actual yield is the amount of aspirin produced in the experiment, which is usually less than the theoretical yield due to side reactions, incomplete reactions, or loss during purification.Assuming you have the actual yield value, you can calculate the percentage yield using the following formula:Percentage yield = actual yield / theoretical yield 100If you don't have the actual yield value, you cannot calculate the percentage yield.