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

35. In the reaction 2Na + 2H₂O → 2NaOH + H₂, 46 g of sodium is added to 54 g of water. The mass of hydrogen gas produced is (Na = 23, O = 16, H = 1)

A. 1 g
B. 2 g
C. 3 g
D. 4 g

📝 Explanation

Na = 2 mol, H₂O = 3 mol. Na is limiting. H₂ = 1 mol = 2 g.

📖 Additional Information

  • 1 g
  • 2 g
  • 3 g
  • 4 g

Na = 2 mol, H₂O = 3 mol. Na is limiting. H₂ = 1 mol = 2 g.

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