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A-LevelChemistryGroup 29701/12 · Feb/Mar 2017 · Q181 Mark

Z is an anhydrous compound of a Group 2 element. When it is heated, Z undergoes thermal decomposition to produce two different gases. Z has relatively low thermal stability compared to other Group 2 compounds containing the same anion as Z. What is compound Z?

Abarium carbonate

Bbarium nitrate

Cmagnesium carbonate

Dmagnesium nitrate

✓ Correct answer

D: magnesium nitrate

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About this question

Topic: Group 2, A-Level Chemistry (syllabus 9701). Multiple choice, 1 mark.
Source: A-Level Chemistry, Feb/Mar 2017 Paper 1 Variant 2, question 18.

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