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K(sp) of a sparingly soluble salt AB(2) ...

`K_(sp)` of a sparingly soluble salt `AB_(2)` is `4xx10^(-12) mol^(3) L^(-3)`. The solubility of the salt is

A

`2.3980`

B

`11.6020`

C

`2.6990`

D

Do not calculated exactly

Text Solution

Verified by Experts

The correct Answer is:
A
`ZnCl_(2) to underset(S)(Zn^(+2)+underset(2S)(2Cl^(-))`
`K_(SP)=4S^(1),4S^(3)=3.2xx10^(-8)`
`S^(3)=8.0xx10^(-8), S^(3)=8xx10^(-9)`
`S=2xx10^(-3)`
`P^(H)=3- 2 log-03010xx2, 3-0.602`
`=2.398`
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