1.2048 g sample of impure is dissolved and allowed to react with a solution of
CHEMISTRY · Subjective · A Level · Chemistry · Amount of substance · Amount of substance
Problem
1.2048 g sample of impure Na2CO3 is dissolved and allowed to react with a solution of CaCl2 . The resulting CaCO3 , after precipitation, filtration and drying was found to mass 1.0362 g. Assuming impurities do not contribute to the mass of precipitate, calculate per cent purity of Na2CO3 .