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

In the reaction 2SO₂ + O₂ → 2SO₃, the volume of sulfur trioxide produced at STP when 44.8 dm³ of sulfur dioxide reacts completely is

A. 22.4 dm³
B. 44.8 dm³
✓
C. 67.2 dm³
D. 89.6 dm³

📝 Explanation

The volume ratio SO₂ : SO₃ is 1:1. Hence, 44.8 dm³ of SO₂ produces 44.8 dm³ of SO₃.

📖 Additional Information

  • 22.4 dm³
  • 44.8 dm³
  • 67.2 dm³
  • 89.6 dm³

The volume ratio SO₂ : SO₃ is 1:1. Hence, 44.8 dm³ of SO₂ produces 44.8 dm³ of SO₃.

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