Question

Iodine is liberated from KI solution when treated with :

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

Answer 1

Answer: (B)

CuSO4

Answer 2

CuSO4 + 2K+ $\longrightarrow$K2SO4 + CuI2 ; 2CuI2$\longrightarrow$Cu2I2 + I2 .