DP Chemistry (last assessment 2024)

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Question 22M.1.hl.TZ2.21

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Date May 2022 Marks available [Maximum mark: 1] Reference code 22M.1.hl.TZ2.21
Level hl Paper 1 Time zone TZ2
Command term State Question number 21 Adapted from N/A
21.
[Maximum mark: 1]
22M.1.hl.TZ2.21

Which factor influences the value of the pre-exponential factor, A, in the Arrhenius equation, k=Ae-EaRT?


A.  Nature of reactants

B.  Temperature of reaction

C.  Activation energy of reaction

D.  Overall order of the reaction

[1]

Markscheme

A

Examiners report

43% of candidates identified that the pre-exponential factor in the Arrhenius equation is related to the nature of reactants. The most commonly chosen distractor was the overall order of reaction.

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