1.

The value of `K_(sp)` is `HgCI_(2)` at room temperature is `4.0 xx 10^(-15)`. The concentration of `CI^(Theta)` ion in its aqueous solution at saturation point isA. `1xx10^(-5)`B. `2xx10^(-5)`C. `2xx10^(-15)`D. `8xx10^(-15)`

Answer» Correct Answer - B
`HgCl_(2) rarr Hg^(2+) + 2Cl^(-)`
If solubility is X mol `L^(-1)` then `[Cl^(-)]=2X`
Now `4X^(3)=K_(sp)`
`X=[(K_(sp))/(4)]^(1//3)=[(4xx10^(-15))/(4)]^(1//2)=1xx10^(-5)mol L^(-1)`
or `2X =2 xx 10^(-5) mol L^(-1)`


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