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Copper sulphate solution reacts with KCN...

Copper sulphate solution reacts with `KCN` to give
(a) `Cu(CN)_(2)`
(b) `CuCN`
(c ) `K_(2)[Cu(CN)_(4)]`
(d) `K_(3)[Cu(CN)_(4)]` .

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:
D
`CuSO_4 + 2KCN to Cu(CN)_2 + K_2SO_4`
`2Cu (CN)_2 to Cu_2 (CN)_2 + (CN)_2`
`Cu_2 (CN)_2 + 6KCN to 2K_3 [Cu(CN)_4]`
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