MY and `NY_3`, two nearly insoluble salts have the same -`K_(sp)` values of `6.4xx10^(13)` at room temperature. Which statement would be true in regard to MY and `NY_3`

Options

A. The salts of My and `NY_3` are more soluble in 0.5 (M) KY than in pure water
B. the addition to the salt of KY to solutions of MY and `NY_3` will have no effect on their solubilities
C. The molar solubilities of MY and `NY_3` in water are identical
D. The molar solubility of MY in water is less than that of `NY_3`

Explanation

`MY(s) `K_(sp)=S_1^2`
or `S_1=sqrt(K_(sp))=sqrt(6.2xx10^(-13))mol*L^(-1)`
`NY_3(s) `K_(sp)=S_2(3S_2)^3=27S_2^4`
[`S_1`=Solubility of `NY_3` salt `(mol*L^(-1)`)
`S_2^4=(6.2xx10^(-13))/(27)`
or, `S_2=((6.2xx10^(-13))/(27))^(1//4)" ":.S_1ltS_2`