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In the Lassaigne's test for the detectio...

In the Lassaigne's test for the detection of nitrogen in an organic compound, the appearance of blue coloured compound is due to

A

Ferric ferricyanide

B

Ferrous ferricyanide

C

Ferric ferrocyanide

D

Ferrous ferrocyanide

Text Solution

Verified by Experts

The correct Answer is:
C
`6CN^(-) + Fe^(2+) to [Fe(CN)_(6)]_(4)^(-)`
`3[Fe(CN)_(6)]_(4)^(-) + 4Fe^(3+) + xH_(2)O to underset("prussian blue colour")(Fe_(4)[Fe(CN)_(6)].xH_(2)O)`
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