1.

If the concentration of CrO_(4)^(2-) ions in a saturated solution of silver chromate is 2 xx 10^(-4). Solubility product of silver chromate will be

Answer»

`4 xx 10^(-8)`
`8 xx 10^(-12)`
`12 xx 10^(-12)`
`32 xx 10^(-12)`

SOLUTION :`K_(sp)` of `Ag_(2)CrO_(4) = [AG^(+)]^(2)[CrO_(4)^(--)]`
`CrO_(4)^(--) = 2 xx 10^(-4)` then `Ag^(+_ = 2 xx 2 xx 10^(-4)`
`K_(sp) = (4 xx 10^(-4)) (2 xx 10^(-4)) = 32 xx 10^(-12)`.


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