Chapter 3, Problem 3.9P

PRACTICE 3.9 Aspirin is prepared by reaction salicyclic acid (C₇H₆O₃) with acetic anhydride (C₄H₆O₃) according to the following equation

${\text{C}}_{\text{7}}{\text{H}}_{\text{6}}{\text{O}}_{\text{3}}\left(\text{s}\right){\text{ +C}}_{\text{4}}{\text{H}}_{\text{6}}{\text{O}}_{\text{3}}\left(\text{l}\right)\to {\text{C}}_{\text{9}}{\text{H}}_{\text{8}}{\text{O}}_{\text{4}}\left(\text{s}\right){\text{+CH}}_{\text{3}}{\text{CO}}_{\text{2}}\text{H}\left(\text{1}\right)$

How many grams of acetic anhydride are needed to react with 4.50 g of salicylic acid?