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Chemistry NMDCAT MCQs Limiting and Excess Reactants
nmdcat.online July 2, 2026

53. In the reaction CaCO₃ + 2HCl → CaCl₂ + CO₂ + H₂O, 50 g of CaCO₃ and 36.5 g of HCl are used. The volume of CO₂ at STP is

A. 5.6 dm³
B. 11.2 dm³
✓
C. 22.4 dm³
D. 2.24 dm³

📝 Explanation

Both react stoichiometrically. CO₂ formed = 0.5 mol. Volume = 11.2 dm³.

📖 Additional Information

  • 5.6 dm³
  • 11.2 dm³
  • 22.4 dm³
  • 2.24 dm³

Both react stoichiometrically. CO₂ formed = 0.5 mol. Volume = 11.2 dm³.

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