Answer to Question #163111 in Physical Chemistry for Shimaya

Question

Calcium carbonate, CaCO 3 when heated to calcium oxide (Cao) and carbon dioxide (CO 2 ) . Ir 100 g of calcium carbonate is allowed to decompose, 56 g of calcium oxide is producedWhat mass of carbon dioxide is produced by the decomposition? g

Answer 1

CaCO₃----> CaO + CO₂

Molar mass of CaCO₃= 100g

Molar mass of CO₂= 44g

From stoichiometry

1 mol of CaCO₃ produces 1mol of CO₂

100g of CaCO₃ produces 44g of CO₂

Therefore

Mass of CO₂ produced= 44g