A-LevelChemistryEquilibria9701/12 · Oct/Nov 2018 · Q341 Mark

The equation represents an equilibrium. 4NH3(g) + 5O2(g) ⇋ 4NO(g) + 6H2O(g) ΔH = –900 kJ mol⁻¹ What would increase the concentration of NO at equilibrium? 1 a reduction in the reaction temperature 2 the use of a suitable catalyst 3 an increase in the total pressure

A1, 2 and 3 are correct

B1 and 2 only are correct

C2 and 3 only are correct

D1 only is correct

✓ Correct answer

D: 1 only is correct

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Topic: Equilibria, A-Level Chemistry (syllabus 9701). Multiple choice, 1 mark.
Source: A-Level Chemistry, Oct/Nov 2018 Paper 1 Variant 2, question 34.

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