1.

Sodiumnitroprusside reacts with sulphide ion give a purple colour due to the formation of

Answer»

`[Fe(CN)_(5)NO]^(3-)`
`[Fe(NO)_(5)CN]^(-)`
`[Fe(CN)_(5)NOS]^(4-)`
`[Fe(CN)_(5)NOS]^(3-)`

Solution :`underset("Sodium nitroprusside")([Fe(CN)_(5)NO]^(2-))+S^(2-)rarrunderset("PURPLE COMPLEX")([Fe(CN)_(5)NOS]^(4-))`


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