The solubility product of a springly soluble metal hydroxide [M(OH)_2] is 5xx10^(-16)mol ^(3) L^(-3)at 298 K.Find the pH of its saturated aqucous solutions.

The solubility product of a springly soluble metal hydroxide [M(OH)_2]

1.	The solubility product of a springly soluble metal hydroxide [M(OH)_2] is 5xx10^(-16)mol ^(3) L^(-3)at 298 K.Find the pH of its saturated aqucous solutions.
Answer» Solution :` M(OH)_2 hArr UNDERSET(S) M^(+2)+2 underset(S) OH^(-) ` ` 4S^(3)= 5 xx 10^(-16) rArrS = 5 xx 10 ^(-6)` ` [OH^(-) ] =2S =10 ^(-5), POH =5, PH = 9`