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The molar solubility of Cd(OH)(2) is 1.8...

The molar solubility of `Cd(OH)_(2)` is `1.84xx10^(-5)M` in water. The expected solubility of `Cd(OH)_(2)` in a buffer solution of pH = 12 is

A

`2.49xx10^(-10)` M

B

`6.23xx10^(-11)` M

C

`(2.49)/(1.84)xx10^(-9)M`

D

`1.84xx10^(-9)` M`

Text Solution

Verified by Experts

The correct Answer is:
A
`K_(sp)=4s^(3)=4xx(1.84xx10^(-5))^(3)=24.9xx10^(-15)`
`K_(sp)=2.49xx10^(-14)`
`Cd(OH)_(2)hArrunderset(s)(Cd^(2+))(aq)+underset(10^(-2))(2OH^(-))(aq)`
`2.49xx10^(-14)=s(10^(-2))^(2)`
or, `s=2.49xx10^(-10)M`
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