JEE Main Chemistry question

Chemistry Equilibrium JEE Main

Solubility of an aqueous solution of Mg(OH)₂ is X mol litre⁻¹, then its Ksp is:

(A)4X³Correct
(B)108X⁵
(C)27X⁴
(D)9X

Answer: (A)

Solution

Mg(OH)₂⇌Mg²⁺+2OH⁻; Ksp=X(2X)²=4X³.

Question ID VK-136178