1.

`K_(sp)` of a sparingly soluble salt `AB_(2)` is `4xx10^(-12) mol^(3) L^(-3)`. The solubility of the salt isA. `2xx10^(-6) M`B. `4xx10^(-4) M`C. `1xx10^(-12) M`D. `1xx10^(-4) M`

Answer» Correct Answer - D
`AB_(2)hArrunderset(x)(A^(2+))+underset(2x)(2B)`
`K_(sp)=[A^(2+)][B]^(2)=(x)(2x)^(2)=4x^(3)`
`x^(3)=(K_(sp))/(4)=(4xx10^(-12))/(4)=1xx10^(-12)`
`x=1xx10^(-4) M`


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