The solubility of Pb SO (4) at 25 ^(@)C ...

The solubility of `Pb SO _(4)` at `25 ^(@)C` is `1.1 xx 10 ^(-4)` mol/L. Then its solubility product `(K_(sp))` is:

A

`1.21 xx 10 ^(-8)`

B

`12.1 xx 10 ^(-6)`

C

`121 xx 10 ^(-11)`

D

`1.21 xx 10 ^(-10)`

Verified by Experts

The correct Answer is:

A

`PbSO _(4)` is binary elecroyte, hence its `K _(sp)` can be calculated as, `K _(sp) = S ^(2) = [1.1 xx 10 ^(-4)] ^(2) = 1.21 xx 10 ^(-8)`

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