The molar mass of CaCO3 is 100 g. The maximum amount of carbon dioxide

1.	The molar mass of CaCO3 is 100 g. The maximum amount of carbon dioxide that can be liberated on heating 25 g of CaCO3 is - (A) 11 g (B) 55 g (C) 22 g (D) 2.2 g
Answer» Correct Option :- (A) 11 g Explanation :- 25g CaCO₃ ⇒ 100 25/100 = 1/4 mole of CaCO₃ CaCO₃ → CaO + CO₂ ∴ 1 mole CaCO₃ produce 1 mole CO₂ ∴ 1/4 mole CaCO₃ produce 1/4 mole CO₂ and 1/4 mole CO₂ = 1/4 × 44 g of CO₂ = 11 g

The molar mass of CaCO3 is 100 g. The maximum amount of carbon dioxide that can be liberated on heating 25 g of CaCO3 is - (A) 11 g (B) 55 g (C) 22 g (D) 2.2 g

Answer»

Correct Option :- (A) 11 g

Explanation :-

25g CaCO₃ ⇒ 100 25/100 = 1/4 mole of CaCO₃

CaCO₃ → CaO + CO₂

∴ 1 mole CaCO₃ produce 1 mole CO₂

∴ 1/4 mole CaCO₃ produce 1/4 mole CO₂

and 1/4 mole CO₂ = 1/4 × 44 g of CO₂ = 11 g

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The molar mass of CaCO3 is 100 g. The maximum amount of carbon dioxide that can be liberated on heating 25 g of CaCO3 is - (A) 11 g (B) 55 g (C) 22 g (D) 2.2 g

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