DP Chemistry (last assessment 2024)

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Question 18N.2.hl.TZ0.5b

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Date November 2018 Marks available [Maximum mark: 1] Reference code 18N.2.hl.TZ0.5b
Level hl Paper 2 Time zone TZ0
Command term Predict Question number b Adapted from N/A
b.
[Maximum mark: 1]
18N.2.hl.TZ0.5b

This reaction is used in the manufacture of sulfuric acid.

2SO2 (g) + O2 (g) ⇌ 2SO3 (g)        Kc = 280 at 1000 K

(b)

Predict, giving your reason, the sign of the standard entropy change of the forward reaction.

[1]

Markscheme

negative AND fewer moles/molecules «of gas» in the products ✔

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