MY and NY_3 are insoluble salts and have the same K_(sp) values of 6.2 times 10^-13 at room temperature. Which statement would be true with regard to to MY and NY_3?

MY and NY_3 are insoluble salts and have the same K_(sp) values of 6.2

1.	MY and NY_3 are insoluble salts and have the same K_(sp) values of 6.2 times 10^-13 at room temperature. Which statement would be true with regard to to MY and NY_3?
Answer» The SALTS MY and `NY_3` are more soluble in 0.5M KY than in pure water The additionof the SALT of KY to the suspension of MY and `NY_3` will have no effect on their solubility The molar solubilities of MY and `NY_3` in water are identical The molar solubility of MY in water is LESS than of `NY_3` Solution :Addition of salt KY (having a common ion `Y^-`) decreases the solubility of MY and `NY_3` due to common ion effect. Option (a) and (b) are wrong `K_(SP)=(s) (s)` `6.2 times 10^-13=s^2` `therefores=sqrt(6.2 times 10^-13)approx10^-7` for salt `NY_3,NY_3 leftrightarrow N^(3+) +3Y^-` `K_(sp)=(s) (3s)^3` `K_(sp)27s^4` `s=((6.2 times 10^-13)/27)^(1//4)` `s approx 10^-4` the molar solubility of MY in water is less than of `NY_3`