The identity of a Group 1 metal carbonate may also be found by a titration method.
M⁺ in this question may or may not be the same cation as that in Question 1.
M₂CO₃(s) + 2HCl(aq) → 2MCl(aq) + H₂O(l) + CO₂(g)
FA 3 is an aqueous solution containing 7.46gdm⁻³ of a Group 1 metal carbonate, M₂CO₃.
FA 4 is 0.110 mol dm⁻³ hydrochloric acid, HCl.
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Q: What topic does this question test?

This question tests Atoms, molecules and stoichiometry in A-Level Chemistry (syllabus code 9701). It is worth 14 marks.

Q: Which exam paper is this question from?

This question appeared in the Cambridge A-Level Chemistry Oct/Nov 2021 examination, Paper 3 Variant 3 (9701_w21_qp_33.pdf).

Question

The identity of a Group 1 metal carbonate may also be found by a titration method.
M⁺ in this question may or may not be the same cation as that in Question 1.
M₂CO₃(s) + 2HCl(aq) → 2MCl(aq) + H₂O(l) + CO₂(g)
FA 3 is an aqueous solution containing 7.46gdm⁻³ of a Group 1 metal carbonate, M₂CO₃.
FA 4 is 0.110 mol dm⁻³ hydrochloric acid, HCl.
bromophenol blue indicator

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