Question

The solubility of Mg(OH)2 is s moles/litre. The solubility product under the same condition is

• A. 4S3
• B. 3S4
• C. 4S2
• D. S3.

Answer 1

Answer: (A)

4S3

Answer 2

Mg(OH)2 $\rightleftharpoons$ Mg2+ 2OH– Ksp = [Mg2+] [OH–]2

Ksp = s (2s)2 = 4s3.