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प्रश्न
In Lassaigne’s extract of an organic compound, both nitrogen and sulphur are present, which gives blood red colour with Fe2+ due to the formation of;
पर्याय
NaSCN
[Fe(CN)5NOS]4−
[Fe(SCN)]2+
Fe4[Fe(CN6)]3xH2O
MCQ
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उत्तर
[Fe(SCN)]2+
Explanation:
In case nitrogen and sulphur both are present in an organic compound, sodium thiocyanate is formed, it give blood red colour and no prussian blue since there are no free cyanide ions.
\[\ce{Na + C + N + S -> NaSCN}\]
\[\ce{Fe^{+3} + SCN -> \underset{Blood red}{[Fe(SCN)]^{2+}}}\]
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