Limiting reagent problem solution

Solution to problem 17 on the assignment given


One step in the manufacture of sulfuric acid is the conversion of sulfur dioxide to sulfur trioxide. If 3.55 kg of sulfur dioxide is burned in excess of oxygen 4.20 kg of sulfur trioxide is formed. What is the percent yield of production of SO3
SO2 + O2 = SO3


CaC2 + H2O = Ca(OH)2 + C2H2

a) What is the theoretical yield of acetylene C2H2 if 2.38 grams of CaC2 calcium carbide reacts with water

b) If 0.77 g of acetylene is actually produced, calculate the percentage yield.