Analytical ChemistryHard
Question
Which of the following metal cation is reduced from its higher oxidation state (+2) to (+1) by both KI solution and excess of KCN solution ?
Options
A.Zn2+
B.Hg2+
C.Cu2+
D.None
Solution
2Cu2+ + 4I- → Cu2I2↓ + I2
Cu2+ + 3CN↓ → CuCN ↓ + (CN)2
Cu2+ + 3CN↓ → CuCN ↓ + (CN)2
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