molar mass of p-aminophenol =109.1g/mol
molar mass of acetic anhydride = 102.1
moles of p-aminophenol = mass/molar mass
= 0.00144 mol
moles of acetic anhydride = mass/molar mass
= 0.00476 mol
From the balanced chemical equation we know that for every mole of
p-aminophenol and acetic acid one mole of acetaminophen is produced.
Since there are more moles of acetic anhydride than p-aminophenol,
p-aminophenol is used up first as the reaction proceeds. We can conclude that acetic anhydride is in excess and p-aminophenol
is the limiting reagent.
Therefore # moles of p-aminophenol = # of acetaminophen produced