determining the theoretical yieid of a product. Part B Determine the theoretical yield. Part C Determine the percent yield. A 58.0mL, sample of a 0.108M potassium sullate solution is mixed with 34.0mL of a 0.112M lead(II) acetato solution and the fillowing procipitason riseison ccure: K2SO4(aq)+Pb(C2H3O2)2(aq)2KC2H3O2(aq)+PbSO4(b) The solid PbSO4 is collected, dried, and found to have a mass of 1.01g. Determine the limiting reactant, the theoretical yield, and the percent yield. Part A Ideniliy the limiting reactant. KC2H3O2K2SO4PbSO4Pb(C2H3O2)2 Correct The limiting reactant ot a reaction is found by calculating the number of moles of each reactant and comparing them taking into accoint the stoichiometry of the reaction. In this reaction, since the sloichiometric ratio is 1:1, the reactant with fewee moles will run out first and be the limising reactant because once all of it has reacted the reaction stops despite the presence of another reactant. The limiting teactant is inportant shing determining the theoretical yield of a product