p-Block elementsHard

Question

Iodine is liberated from KI solution when treated with :

Options

A.ZnSO4
B.CuSO4
C.NiSO4
D.FeSO4

Solution

CuSO4 + 2K+ → K2SO4 + CuI2  ; 2CuI2 →  Cu2I2 + I2.

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