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18 January, 17:44

Identify the precipitate (if any) that forms when Na2S and CdSO4 are mixed.

Express your answer as a chemical formula. Enter noreaction if no precipitate is formed.

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  1. 18 January, 18:11
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    CdSO₄ + Na₂S ⇒ CdS↓ + Na₂SO₄

    Cd²⁺ + SO₄²⁻ + 2Na⁺ + S²⁻ ⇒ CdS↓ + 2Na⁺ + SO₄²⁻

    Cd²⁺ + S²⁻ ⇒ CdS↓

    Percipitate: CdS - cadmium sulfide

    Colour: yellow
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