1.

The salt Zn(OH)2 is involved in the following two equilibria: Zn(OH)2(s)⇌Zn2+(aq)+2OH−(aq); Ksp=1.2×10−17 Zn(OH)2(s)+2OH−(aq)⇌[Zn(OH)4]2−(aq); Kc=0.2 Calculate the pH of the solution at which solubility is minimum.

Answer»

The salt Zn(OH)2 is involved in the following two equilibria:
Zn(OH)2(s)Zn2+(aq)+2OH(aq); Ksp=1.2×1017
Zn(OH)2(s)+2OH(aq)[Zn(OH)4]2(aq); Kc=0.2
Calculate the pH of the solution at which solubility is minimum.



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