A-LevelChemistryReaction kinetics9701/12 · May/June 2017 · Q111 Mark

The Boltzmann distribution for the hydrogenation of an alkene at a particular temperature in the absence of a catalyst is shown. [Figure 11.1] Which row correctly describes the effects of adding nickel to the reaction vessel?

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Achanges, decreases

Bchanges, increases

Cdoes not change, decreases

Ddoes not change, increases

✓ Correct answer

C: does not change, decreases

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Topic: Reaction kinetics, A-Level Chemistry (syllabus 9701). Multiple choice, 1 mark.
Source: A-Level Chemistry, May/June 2017 Paper 1 Variant 2, question 11.

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