DP Chemistry (first assessment 2025)

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Question SPM.1A.HL.TZ0.31

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Date May Specimen-2023 Marks available [Maximum mark: 1] Reference code SPM.1A.HL.TZ0.31
Level HL Paper 1A Time zone TZ0
Command term Question number 31 Adapted from N/A
31.
[Maximum mark: 1]
SPM.1A.HL.TZ0.31

Which reaction would be expected to have the largest Arrhenius (pre-exponential) factor, A, at constant temperature?


A.  H (g) + I (g) → HI (g)

B.  H2 (g) + I2 (g) → 2HI (g)

C.  2HCl (g) → H2 (g) + Cl2 (g)

D.  H2 + C2H4 → C2H6

[1]

Markscheme

A