Question

Mg(OH)2 is a slightly soluble salt what is the Ksp expressi a. [Mg2+][20H J? b. (Mg2+][OH-]2 c. [Mg2][OH-] d. [Mg2][OH-]?

Answer 1

Answer:

B) $k_{sp} =[Mg_{aq} ]*[OH_{aq}]^{2}$

Explanation:

Ksp is the solubility product constant.

For a generic chemical equation

$AB_{2} = A_{aq}+2B_{aq}$

The Ksp for this generic chemical equation is

$k_{sp} =[A_{aq} ]*[B_{aq}]^{2}$

So the Ksp fot the Mg(OH)2 is

$k_{sp} =[Mg_{aq} ]*[OH_{aq}]^{2}$