1.

To the CuSO_(4) solution, NaHSO_(3) and HCl were added followed by ammonium thiocanate solution. The compound formed is

Answer»

`Cu(SCN)_(2)`
`CUSCN`
`Cu(SO_(3))_(2)`
`CuSO_(4)`

Solution :`Cu^(2+)` is reduced to `Cu^(+1)` by `SO_(2)`. CuSCN GET PRECIPITATED.


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