First slide

Solubility product(KSP)

Question

At 298K, the magnitude of solubility product of two sparingly soluble salts ‘ $AB$ ’ and ' ${AB}_{2}$ ' is same $(4 \times 10^{- 12})$ . Based on this data the correct statement is

Moderate

Solution

$AB; K_{sp} = S_{1}^{2} S_{1} = 2 \times 10^{- 6} M; {AB}_{2}; K_{sp} = 4 S_{2}^{3} S_{2} = 10^{- 4} M S_{2} > S_{1} ∴ {AB}_{2} is more soluble than AB$

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