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Sulphur

In sulphur de...

Question

In sulphur detection of an organic compound, sodium nitropruside solution is added to sodium extract. Formation of violet colour is due to the formation of:

A

N a_{3} F e (C N)_{6}

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B

N a [F e (C N)_{5} N O S N a]

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C

N a_{3} [F e (C N)_{5} N S]

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D

F e (C N S)_{3}

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Solution

The correct option is B $N a [F e (C N)_{5} N O S N a]$
$N a_{2} S + N a_{2} [F e (C N)_{5} N O] \to$
From soldium sodium nitropruside
extract
$N a_{4} [F e (C N)_{5} N O S]$
purple coloured
sodium thionitroprusside

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