O-LevelChemistryRates of Reaction5070/11 · May/June 2015 · Q201 Mark

In which of these equilibria is the forward reaction favoured by an increase in pressure?

A2HI(g) ⇌ H₂(g) + I₂(g)

BN₂O₄(g) ⇌ 2NO₂(g)

C2NO(g) + O₂(g) ⇌ 2NO₂(g)

DPCl₅(g) ⇌ PCl₃(g) + Cl₂(g)

✓ Correct answer

C: 2NO(g) + O₂(g) ⇌ 2NO₂(g)

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Topic: Rates of Reaction, O-Level Chemistry (syllabus 5070). Multiple choice, 1 mark.
Source: O-Level Chemistry, May/June 2015 Paper 1 Variant 1, question 20.

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