A-LevelChemistryReaction kinetics9701/12 · Feb/Mar 2018 · Q121 Mark

Which statement about the effect of a catalyst on a reversible reaction is correct?

AThe activation energy of the forward reaction stays the same.

BThe composition of the equilibrium mixture stays the same.

CThe rate of the backward reaction stays the same.

DThe value of the equilibrium constant changes.

✓ Correct answer

B: The composition of the equilibrium mixture stays the same.

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Topic: Reaction kinetics, A-Level Chemistry (syllabus 9701). Multiple choice, 1 mark.
Source: A-Level Chemistry, Feb/Mar 2018 Paper 1 Variant 2, question 12.

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