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Q4.

Using the standard reduction potential values given below, write down the overall reaction and determine the solubility product

constant (Ksp) of Zn(OH)2 at 30°C.

Zn(OH)₂(s) + 2 e¯ ⇒ Zn(s) + 2 OH¯(aq)

Zn²+ (aq) + 2 e¯ ⇒ Zn(s)

E = -1.221 V

Eº = -0.762 V

Fig: 1