O-LevelChemistryAcids, Bases & Salts5070/12 · May/June 2022 · Q121 Mark

Aqueous silver nitrate, AgNO₃, reacts with aqueous potassium chromate(VI), K₂CrO₄, to give a yellow precipitate. What is the ionic equation for this reaction?

A2AgNO₃(aq) + K₂CrO₄(aq) → Ag₂CrO₄(s) + 2KNO₃(aq)

B2Ag⁺(aq) + 2NO₃⁻(aq) + 2K⁺(aq) + CrO₄²⁻(aq) → Ag₂CrO₄(s) + 2NO₃⁻(aq) + 2K⁺(aq)

C2Ag⁺(aq) + CrO₄²⁻(aq) → Ag₂CrO₄(s)

DAg⁺(aq) + CrO₄⁻(aq) → AgCrO₄(s)

✓ Correct answer

C: 2Ag⁺(aq) + CrO₄²⁻(aq) → Ag₂CrO₄(s)

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Topic: Acids, Bases & Salts, O-Level Chemistry (syllabus 5070). Multiple choice, 1 mark.
Source: O-Level Chemistry, May/June 2022 Paper 1 Variant 2, question 12.

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