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O-LevelChemistryAcids, Bases & Salts5070/12 · May/June 2023 · Q221 Mark

Which statement about hydrochloric acid is correct?

AHydrochloric acid reacts with magnesium carbonate to form three different products.
BHydrochloric acid reacts with magnesium to form magnesium chloride and water.
CWhen hydrochloric acid is added to a colourless solution of thymolphthalein, it turns blue.
DWhen hydrochloric acid is warmed with ammonium chloride, ammonia is formed.

✓ Correct answer

A: Hydrochloric acid reacts with magnesium carbonate to form three different products.

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About this question

Topic
Acids, Bases & Salts, O-Level Chemistry (syllabus 5070). Multiple choice, 1 mark.
Source
O-Level Chemistry, May/June 2023 Paper 1 Variant 2, question 22.

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