A-LevelChemistryReaction kinetics9701/12 · May/June 2018 · Q111 Mark

A chemical company used a catalyst in a chemical process. The company has now decided not to use the catalyst but to increase the temperature so that the rate of the reaction is the same as it was when the catalyst was used. Which statement about the new conditions compared to the original conditions is correct?

AThe activation energy has been decreased.

BThe activation energy has been increased.

CThere are fewer successful collisions per unit time.

DThere are more successful collisions per unit time.

✓ Correct answer

B: The activation energy has been increased.

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Topic: Reaction kinetics, A-Level Chemistry (syllabus 9701). Multiple choice, 1 mark.
Source: A-Level Chemistry, May/June 2018 Paper 1 Variant 2, question 11.

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