A-LevelChemistryChemical energetics9701/12 · Oct/Nov 2021 · Q91 Mark

The equation for the formation of ammonium chloride is shown. NH3(g) + HCl(g) ⇌ NH4Cl(s) ΔH = −314 kJ mol⁻¹ Which diagram shows the correctly labelled reaction pathway diagram for the decomposition of ammonium chloride?

This question uses a diagram from the original paper, which isn't shown here. Open the full paper from the past papers archive to see it.

A[Reaction pathway diagram A]

B[Reaction pathway diagram B]

C[Reaction pathway diagram C]

D[Reaction pathway diagram D]

✓ Correct answer

B: [Reaction pathway diagram B]

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Topic: Chemical energetics, A-Level Chemistry (syllabus 9701). Multiple choice, 1 mark.
Source: A-Level Chemistry, Oct/Nov 2021 Paper 1 Variant 2, question 9.

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