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26 July, 11:19

The ksp of cadmium carbonate, cdco3, is 1.0 * 10-12. calculate the solubility of this compound in g/l.

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  1. 26 July, 14:53
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    Answer is: solubility of cadmium carbonate is 0,00017 g/L.

    Cadmium carbonate in water: CdCO₃ → Cd²⁺ + CO₃²⁻.

    [Cd²⁺] = [CO₃²⁻] = x.

    Ksp = [Cd²⁺] · [CO₃²⁻].

    10⁻¹² = x².

    x = √10⁻¹².

    x = [Cd²⁺] = [CO₃²⁻] = 10⁻⁶ mol/L.

    [CdCO₃] = 10⁻⁶ mol/L.

    n (CdCO₃) = 10⁻⁶ mol/L · 1 L = 10⁻⁶ mol.

    m (CdCO₃) = n (CdCO₃) · M (CdCO₃).

    m (CdCO₃) = 10⁻⁶ mol · 172,41 g/mol.

    m (CdCO₃) = 0,00017 g/L.
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