1.

If the solubility of an aqueous solution of Mg(OH)_(2) be Xmoll t^(-1) than k_(sp) of Mg(OH)_(2)is:

Answer»

`4X^(3)`
`108X^(5)`
`27X^(4)`
9X

Solution :`Mg(OH)_(2) to underset(s)(Mg^(2+)) + underset(2S)2OH^(-)`
`K_(sp)=[Mg^(2+)][OH^(-)] = Sxx(2S)^(2) = 4S^(3 = 4X^(3)`


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