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Chemistry NMDCAT MCQs Moles and Avogadro's Numbers
nmdcat.online July 2, 2026

In the reaction 2H₂S + SO₂ → 3S + 2H₂O, the mass of sulphur precipitate formed when 0.5 moles of H₂S react completely is

A. 16 g
B. 24 g
✓
C. 32 g
D. 48 g

📝 Explanation

Mole ratio S:H₂S = 3:2. Moles of S = 0.5 × 3/2 = 0.75 mole. Mass = 0.75 × 32 = 24 g.

📖 Additional Information

  • 16 g
  • 24 g
  • 32 g
  • 48 g

Mole ratio S:H₂S = 3:2. Moles of S = 0.5 × 3/2 = 0.75 mole. Mass = 0.75 × 32 = 24 g.

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