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CuSO(4) reacts with KCN to form...

`CuSO_(4)` reacts with KCN to form

A

`Cu(CN)_(2)`

B

`CuCN`

C

`K_(2)[Cu(CN)_(4)]`

D

`K_(3)[Cu(CN)_(4)]`

Text Solution

Verified by Experts

The correct Answer is:
B, D
`2CuSO_(4)+4KCNrarr2CuCN+2K_(2)SO_(4)+underset("cyanogen"){:(CN),("|"),(CN):}`
`3KCN+CuCNrarr K_(3)[Cu(CN)_(4)]`
(b) and (d) are correct.
(a) and (c) are not possible because KCN acts as a reducing agent.
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