Solid calcium carbonate, CaCO3, is able to remove sulphur dioxide from waste gases by the reaction:
CaCO3 + SO2 + other reactants ------> CaSO3 + other products
In a particular experiment, 255 g of CaCO3 was exposed to 135 g of SO2 in the presence of an excess amount of the other chemicals required for the reaction.
a) What is the theoretical yield of CaSO3?
b) If only 198 g of CaSO3 was isolated from the products, what was the precentage yield of CaSO3 in this experiment?