1.

Select which complex formation reaction is/are incorrect for forward displacement:

Answer»

`Ag_(2)S+8CN^(-) to [Ag(CN)_(4)]^(-)+S^(2)`
`CdSO_(4)+4CN^(-) to [CU(NH_(3))_(4)]+SO^(4)`
`CuSO_(4)+4NH_(3) to [Cu(NH_(3))_(4)]+SO_(4)`
`Cu(NO_(3))_(2)+4CN^(-) to [Cu(CN)_(4)]^(2-)+2NO_(3)^(-)`

Solution :`(a) [Ag(CN)_(2)]^(-) "is formed"`
(d) [Cu(CN)_(4)]^(-) "is formed "


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