DP Chemistry (first assessment 2025)

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Question 21M.1A.SL.TZ2.23

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Date May 2021 Marks available [Maximum mark: 1] Reference code 21M.1A.SL.TZ2.23
Level SL Paper 1A Time zone TZ2
Command term Apply Question number 23 Adapted from N/A
23.
[Maximum mark: 1]
21M.1A.SL.TZ2.23

Sulfur dioxide reacts with oxygen to form sulfur trioxide.

2SO2 (g) + O2 (g) ⇌ 2SO3 (g)           ΔH = −197 kJ

Which change increases the value of Kc?

A.  increasing the temperature

B.  decreasing the temperature

C.  decreasing [SO2 (g)]

D.  decreasing [SO3 (g)]

[1]

Markscheme

B

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