DP Chemistry (last assessment 2024)

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Question 18N.2.sl.TZ0.5a

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

This reaction is used in the manufacture of sulfuric acid.

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

(a)

State why this equilibrium reaction is considered homogeneous.

[1]

Markscheme

all «species» are in same phase ✔

 

Accept “all species are in same state”.

Accept “all species are gases”.

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