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A-LevelChemistryGroup 29701/12 · Oct/Nov 2016 · Q171 Mark

When heated, magnesium nitrate decomposes. Which equation for the thermal decomposition of magnesium nitrate is correct?

AMg(NO₃)₂ → MgO + NO₂ + NO + O₂

B2Mg(NO₃)₂ → 2MgO + 4NO + 3O₂

C2Mg(NO₃)₂ → 2MgO + 4NO₂ + O₂

D3Mg(NO₃)₂ → Mg₃N₂ + MgO + 3NO + 7O₂

✓ Correct answer

C: 2Mg(NO₃)₂ → 2MgO + 4NO₂ + O₂

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About this question

Topic: Group 2, A-Level Chemistry (syllabus 9701). Multiple choice, 1 mark.
Source: A-Level Chemistry, Oct/Nov 2016 Paper 1 Variant 2, question 17.

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