A-LevelChemistryEquilibria9701/12 · May/June 2015 · Q81 Mark

Nitrogen dioxide, NO₂, exists in equilibrium with dinitrogen tetroxide, N₂O₄. 2NO₂(g) ⇌ N₂O₄(g) ∆H = −57 kJ mol⁻¹ Which conditions give the greatest percentage of N₂O₄(g) at equilibrium? pressure temperature

Ahigh, high

Bhigh, low

Clow, high

Dlow, low

✓ Correct answer

B: high, low

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Topic: Equilibria, A-Level Chemistry (syllabus 9701). Multiple choice, 1 mark.
Source: A-Level Chemistry, May/June 2015 Paper 1 Variant 2, question 8.

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