Qualitative analysis of Lead II ions

Qualitative analysis of Pb²⁺

1. Forms a white precipitate with sodium hydroxide soluble in excess

Pb²⁺(aq) + 2OH^–(aq)     →    Pb(OH)₂ (s) + 2OH_–(aq) →           Pb(OH)₄^2- (aq)

2. Forms white precipitate with ammonia solution insoluble in excess

Pb²⁺(aq) + 2OH^–(aq)     →    Pb(OH)₂ (s)

3. Forms yellow precipitate with potassium iodide

Pb²⁺(aq) + 2I^–(aq)       →    PbI₂ (s)

4. Forms white precipitate hydrochloric acid soluble on warming

Pb²⁺(aq) + 2CI^–(aq)       →    PbCI₂ (s)

5. Forms white precipitate with sulphate ions

Pb²⁺(aq) + SO₄^2-(aq)     →    PbSO₄ (s)

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