Assume that 3.0g of aniline and 4.5 mL of acetic anhydride are used in the preparation of acetanilide. What is the limiting reagent? What is the theoretical yield of acetanilide? What is the percent yield if 3.3g of acetanilide is obtained?. Equation C6H7N + (CH3CO)2O ===> C8H9NO(acetanilide) + CH3CO2H.