A-LevelChemistryReaction kinetics9701/12 · Oct/Nov 2015 · Q111 Mark

Which row correctly describes what happens when the temperature of a chemical reaction is decreased?

Aactivation energy (Ea): decreases, number of successful collisions: decreases

Bactivation energy (Ea): decreases, number of successful collisions: increases

Cactivation energy (Ea): remains the same, number of successful collisions: decreases

Dactivation energy (Ea): remains the same, number of successful collisions: increases

✓ Correct answer

C: activation energy (Ea): remains the same, number of successful collisions: decreases

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Topic: Reaction kinetics, A-Level Chemistry (syllabus 9701). Multiple choice, 1 mark.
Source: A-Level Chemistry, Oct/Nov 2015 Paper 1 Variant 2, question 11.

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