Question

Which of the following will be more soluble in an acidic solution than in pure water?Sn(OH)2, CuCN, KCIO4, PbCl2, Ag2S

Answer 1

Sn(OH)2 more soluble in acidic solution

Sn(OH)2 ------------> Sn⁺² + 2OH^-

Acid is aded to gives H+ ions. It react with OH- to form unionisable H2O. So the equilibrium shift to right side.

CuCN----------> Cu⁺² + CN^-

Acid is aded to gives H+ ions. It react with CN- to form unionisable HCN. So the equilibrium shift to right side.

Ag2S --------------> 2Ag⁺ + S^-2

Acid is aded to gives H+ ions. It react with S^-2 to form unionisable H2S. So the equilibrium shift to right side.