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

26. In the Haber process, N₂ + 3H₂ → 2NH₃, a mixture of 56 g of N₂ and 12 g of H₂ is used. The maximum mass of ammonia formed is (N = 14, H = 1)

A. 34 g
B. 68 g
C. 17 g
D. 51 g

📝 Explanation

Moles of N₂ = 56/28 = 2 mol. Moles of H₂ = 12/2 = 6 mol. The mixture is stoichiometric. NH₃ formed = 4 mol. Mass = 4 × 17 = 68 g.

📖 Additional Information

  • 34 g
  • 68 g
  • 17 g
  • 51 g

Moles of N₂ = 56/28 = 2 mol. Moles of H₂ = 12/2 = 6 mol. The mixture is stoichiometric. NH₃ formed = 4 mol. Mass = 4 × 17 = 68 g.

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