MEDIUMMCQ SINGLEJEE Advanced ChemistryPhysical ChemistryIonic equilibriumSalt Hydrolysis

What is the solubility of calcium fluoride in a saturated solution if its solubility product is 3.2 × 10–11

A.2.0 × 10–4 mole/litre✓ Correct

B.12.0 × 10–3 mole/litre

C.0.2 × 10–4 mole/litre

D.2 × 10–3 mole/litre

Explanation

The solubility product of calcium fluoride is given. Therefore, the solubility can be found as- + 2 2 2 sp 11 2 3 12 3 12 3 12 4 CaF Ca 2F K [Ca ][F ] 3.2 10 [ ][2 ] 4 32 10 8 10 8 10 2 10 x x x x x x x x x x x Preferential precipitation of salts

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