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

58. During the reaction 2Pb(NO₃)₂ → 2PbO + 4NO₂ + O₂, 66.2 g of lead nitrate is heated. The total volume of gases evolved at STP is

A. 5.6 dm³
B. 11.2 dm³
✓
C. 16.8 dm³
D. 22.4 dm³

📝 Explanation

0.2 mol Pb(NO₃)₂ produces 0.5 mol gases. Volume = 11.2 dm³.

📖 Additional Information

  • 5.6 dm³
  • 11.2 dm³
  • 16.8 dm³
  • 22.4 dm³

0.2 mol Pb(NO₃)₂ produces 0.5 mol gases. Volume = 11.2 dm³.

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