Aspirin (C9H8O4) is produced from salicylic acid (C7H6O3), and acetic anhydride (C4H6O3):
C7H6O3 + C4H6O3 �¨ C9H8O4 + HC2H3O2 .
(c) What is the theoretical yield of aspirin if 189 kg of salicylic acid is allowed to react with 128 kg of acetic anhydride?
(d) If the situation described in part (c) produces 117 kg of aspirin, what is the percentage yield?