question_answer

The solubility product of a salt having general formula\[M{{X}_{2}},\]in water is\[4\times {{10}^{-12}}\]. The concentration of\[{{M}^{2+}}\]ions in the aqueous solution of the salt is     AIEEE  Solved  Paper-2005

A) \[4.0\times {{10}^{-1}}M\]          

B) \[1.6\times {{10}^{-4}}M\]

C)                        \[1.0\times {{10}^{-4}}M\]  

D)        \[2.0\times {{10}^{-6}}M\]

Correct Answer: C

Solution :

If solubility be s then