In the Lassaigne's test for the nitrogen in an organic compound, the Prussian colour is obtained due to the formation of :

N a [F e (C N)_{6}]

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F e_{4} [F e (C N)_{6}]_{3}

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F e [F e (C N)_{6}]

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F e_{3} [F e (C N)_{6}]_{4}

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Solution

The correct option is B $F e_{4} [F e (C N)_{6}]_{3}$
Lassaigne's Extract + Ferrous sulphate $\to F e_{4} [F e (C N)_{6}]_{3} P r u s s i a n c o l o u r$

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Similar questions

In the Lassaigne’s test for nitrogen in an organic compound, the Prussian blue colour is obtained due to the formation of:

(a) Na₄[Fe(CN)₆] (b) Fe₄[Fe(CN)₆]₃ (c) Fe₂[Fe(CN)₆] (d) Fe₃[Fe(CN)₆]₄

{N H}_{2} - {N H}_{2}

{F e}_{4} {[F e ({C N}_{6})]}_{3}

F e {S o}_{4}, F e {C I}_{3}

F e_{4} [F e (C N)_{6}]_{3}

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