1.

MY and NY_3 two nearly insoluble salts, have the same K_(SP) values of 6.2 xx 10^(-13) at room temperature. Which statement would be true in regard to MY and NY_3 ?

Answer»

The molar solubility of MY in water is less than that of `NY_3`
The salts MY and `NY_3` are more SOLUBLE in 0.5 M KY than in PURE water.
The addition of the salt of KY to solution of MY and `NY_3` will have no effect on their solubilities.
The molar solubilities of MY and `NY_3` in water are identical.

Solution :For MY, `K_(SP)=S^2`
`S=(6.2xx10^(-13))^(1/2)`
For `NY_3, K_(SP)=27 S^4`
`S=(6.2xx10^(-13))^(1/4)/27`


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