MCQ
When KCN is added to CuSO4 solution, there is formation of the stable water soluble complex. This complex is:
- AK4[Cu(CN)6]
- BK3[Cu(CN)4]
- CK2[Cu(CN)4]
- DK[Cu(CN)3]
✓
Answer
- K3[Cu(CN)4]
Explanation:
When KCN is added to CuSO4 solution, the following reaction occurs.
4KCN+CuSO4 → K3[Cu(CN)4].
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