Aspirin can be made in the laboratory by reacting acetic anhydride (C4H6O3)
with salicylic acid (C7H6O3)
to form aspirin (C9H8O4)
and acetic acid (C2H4O2)
. The balanced equation is
C4H6O3+C7H6O3→C9H8O4+C2H4O2

In a laboratory synthesis, a student begins with 3.00 mL
of acetic anhydride (density=1.08g/ml)
and 1.23 g
of salicylic acid. Once the reaction is complete, the student collects 1.20 g
of aspirin.
a. Determine the theoretical yield of aspirin for the reaction.
b. Determine the percent yield of aspirin for the reaction.