In the formation of sulphur trioxide by the contact process,
2SO₂ (g) + O₂ (g) ⟶ 2SO₃ (g)
The rate of reaction is expressed as − d(O₂)/dt = 2.5 × 10⁻⁴ mol L⁻¹ sec⁻¹
The rate of disappearance of (SO₂) will be -

Question

In the formation of sulphur trioxide by the contact process,

2SO₂ (g) + O₂ (g) ⟶ 2SO₃ (g)

The rate of reaction is expressed as − d(O₂)/dt = 2.5 × 10⁻⁴ mol L⁻¹ sec⁻¹

The rate of disappearance of (SO₂) will be -

Accepted Answer

Answer: 5.0 × 10⁻⁴ mol L⁻¹ s⁻¹ — 2SO₂ + O₂ → 2SO₃ Rate ratio: −d[SO₂]/dt : −d[O₂]/dt = 2 : 1 = 2 × 2.5 × 10⁻⁴ = 5.0 × 10⁻⁴ mol L⁻¹ s⁻¹