To calculate the theoretical yield of 2,4-dinitrobenzoic acid, we need to use stoichiometry. First, we need the balanced chemical equation for the reaction:C7H6O2 benzoic acid + 2 HNO3 nitric acid C7H4N2O6 2,4-dinitrobenzoic acid + 2 H2O water Next, we need the molar masses of benzoic acid and 2,4-dinitrobenzoic acid:Benzoic acid C7H6O2 : 7 12.01 + 6 1.01 + 2 16.00 = 122.12 g/mol2,4-Dinitrobenzoic acid C7H4N2O6 : 7 12.01 + 4 1.01 + 2 14.01 + 6 16.00 = 212.14 g/molNow, we can calculate the moles of benzoic acid in 10 grams:moles of benzoic acid = mass / molar mass = 10 g / 122.12 g/mol = 0.0819 molSince the balanced equation shows a 1:1 ratio between benzoic acid and 2,4-dinitrobenzoic acid, the moles of 2,4-dinitrobenzoic acid produced will be the same as the moles of benzoic acid:moles of 2,4-dinitrobenzoic acid = 0.0819 molFinally, we can calculate the theoretical yield of 2,4-dinitrobenzoic acid:theoretical yield = moles molar mass = 0.0819 mol 212.14 g/mol = 17.37 gSo, the theoretical yield of 2,4-dinitrobenzoic acid that can be obtained from 10 grams of benzoic acid and excess nitric acid, assuming 100% conversion efficiency, is 17.37 grams.