Calcium carbonate,

CHEMISTRY · Numerical · A Level · Chemistry · Amount of substance · Amount of substance

Problem

Calcium carbonate, CaCO3\text{CaCO}_3, removes sulphur dioxide, SO2\text{SO}_2, from waste gases by a reaction in which the two substances react in a 1:11:1 stoichiometric ratio to form equimolar amounts of CaSO3\text{CaSO}_3 and CO2\text{CO}_2. When 255 g255\,\text{g} of CaCO3\text{CaCO}_3 reacts with 135 g135\,\text{g} of SO2\text{SO}_2, 198 g198\,\text{g} of CaSO3\text{CaSO}_3 is formed. Determine the percentage yield of CaSO3\text{CaSO}_3.

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