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Sodium nitroprusside when added to an al...

Sodium nitroprusside when added to an alkaline solution of sulphide ions produces

A

Red colouration

B

Blue colouration

C

Purple colouration

D

Brown colouration

Text Solution

Verified by Experts

The correct Answer is:
C
`Na_(2)S+underset("Sodium nitroprusside")(Na_(2)[Fe(NO)(CN)_(5)])to underset("Violet coloured complex")(Na_(3)[Fe(ONSNa)(CN)_(5)])` or `underset("Purple colour complex")(Na_(4)[Fe(CN)_(5)NOS])`
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Statement-1:A solution containing S^(2-) ions gives purple/violet colour with sodium nitroprusside solution in alkaline medium. Statement-2 :Sodium sulphide gives black precipitate with silver nitrate solution.

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