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The solubility product of a salt having ...

The solubility product of a salt having general formula `MX_2` in water ` 4xx 10 ^(-12) ` .The concentration of `M^(2+) ` ions in the aqueous solution of the salt is

A

`4.0x10^(-10)M`

B

`1.6xx10^(-4)M`

C

`1.0xx10^(-4)M`

D

`2.0xx10^(-6)M`

Text Solution

Verified by Experts

The correct Answer is:
C
`MX_(2)hArr M^(2+)+underset(2s)(2X)`
`K_(sp)=[M^(2-)][X^(-)]^(2)`
If solubility be s then
`K_(sp)=(s)(2s)^(2)=4s^(3)`
`4s^(3)=4xx10^(-12)`
`therefores=1xx10^(-4)M`
`thereforeM^(2-)=s=1xx10^(-4)M`
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