DP Chemistry (last assessment 2024)

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Question 22M.2.hl.TZ2.4a(i)

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Date May 2022 Marks available [Maximum mark: 1] Reference code 22M.2.hl.TZ2.4a(i)
Level hl Paper 2 Time zone TZ2
Command term Deduce Question number a(i) Adapted from N/A
a(i).
[Maximum mark: 1]
22M.2.hl.TZ2.4a(i)

Hydrogen and iodine react to form hydrogen iodide.

H2 (g) + I2 (g) ⇌ 2HI (g)

The following experimental data was obtained.

(a(i))

Deduce the order of reaction with respect to hydrogen.

[1]

Markscheme

first order ✔

Examiners report

4(a)(i)-(iii): Deduction of rate orders and rate expression were very well done overall, with occasional errors in the units of the rate constant, but clearly among the best answered questions.

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