A-LevelChemistryAtoms, molecules and stoichiometry9701/12 · Feb/Mar 2022 · Q201 Mark

Equal masses of CaCO₃, Ca(NO₃)₂, BaCO₃ and Ba(NO₃)₂ are thermally decomposed. The volume of gas produced in each experiment is measured under the same conditions. Which compound will produce the greatest volume of gas?

ACaCO₃

BCa(NO₃)₂

CBaCO₃

DBa(NO₃)₂

✓ Correct answer

B: Ca(NO₃)₂

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Topic: Atoms, molecules and stoichiometry, A-Level Chemistry (syllabus 9701). Multiple choice, 1 mark.
Source: A-Level Chemistry, Feb/Mar 2022 Paper 1 Variant 2, question 20.

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