DP Chemistry (first assessment 2025)

Question SPM.1A.HL.TZ0.30

Date	May Specimen-2023	Marks available	[Maximum mark: 1]	Reference code	SPM.1A.HL.TZ0.30
Level	HL	Paper	1A	Time zone	TZ0
Command term		Question number	30	Adapted from	N/A

30.

[Maximum mark: 1]

SPM.1A.HL.TZ0.30

The equation for the reaction between two gases, A and B, is:

$A (g) + 2 B (g) ⇌ 2 C (g)$

When the reaction is at equilibrium at 600 K, the concentrations of A, B, and C are 2, 1, and 2 mol dm⁻³respectively. What is the value of the equilibrium constant at 600 K?

A. 0.25

B. 1

C. 2

D. 4

[1]

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Question SPM.1A.HL.TZ0.30

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