To calculate the theoretical yield of acetylsalicylic acid, we need to first determine the limiting reactant, which in this case is salicylic acid since we have an excess of acetic anhydride. Then, we will use stoichiometry to determine the amount of product formed.1. Determine the molecular weight of salicylic acid C7H6O3 and acetylsalicylic acid C9H8O4 .Salicylic acid: 7 x 12.01 + 6 x 1.01 + 3 x 16.00 = 138.12 g/molAcetylsalicylic acid: 9 x 12.01 + 8 x 1.01 + 4 x 16.00 = 180.16 g/mol2. Calculate the moles of salicylic acid.moles = mass / molecular weightmoles = 5 g / 138.12 g/mol = 0.0362 mol3. Use stoichiometry to determine the moles of acetylsalicylic acid produced.The balanced chemical equation for the synthesis of acetylsalicylic acid is:C7H6O3 + C4H6O3 C9H8O4 + C2H4O2From the balanced equation, we can see that 1 mole of salicylic acid reacts to produce 1 mole of acetylsalicylic acid.moles of acetylsalicylic acid = moles of salicylic acid = 0.0362 mol4. Calculate the theoretical yield of acetylsalicylic acid.mass = moles x molecular weightmass = 0.0362 mol x 180.16 g/mol = 6.52 gTherefore, the theoretical yield of acetylsalicylic acid that can be produced from 5 grams of salicylic acid and an excess amount of acetic anhydride is 6.52 grams, assuming 100% conversion and purity of the reaction.