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

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Chemistry

Karlee Duran

15 March, 23:59

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

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Cordell Forbes · Answer 1

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.