Sodium fusion extract of aniline,when heated | vedclass

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(B) The carbon and nitrogen present in the organic compound,upon fusion with sodium metal,form sodium cyanide $(NaCN)$,which is soluble in water.This

Vedclass · Accepted Answer

$Fe_4\left[Fe(CN)_6\right]_3 \cdot x H_2O$

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(B) The carbon and nitrogen present in the organic compound,upon fusion with sodium metal,form sodium cyanide $(NaCN)$,which is soluble in water.This is converted into sodium ferrocyanide by the addition of a sufficient quantity of ferrous sulphate.Ferric ions generated during the process react with ferrocyanide to form the Prussian blue precipitate of ferric ferrocyanide.The Prussian blue colour is due to the formation of ferric ferrocyanide,$Fe_4\left[Fe(CN)_6\right]_3 \cdot xH_2O$.Reaction:$(i) Fe^{2+} + 6CN^{-} \longrightarrow \left[Fe(CN)_6\right]^{4-}$ (Hexacyanoferrate$(II)$)$(ii) Fe^{2+} \xrightarrow[Conc. H_2SO_4]{} Fe^{3+} + e^{-}$$(iii) 3\left[Fe(CN)_6\right]^{4-} + 4Fe^{3+} \longrightarrow Fe_4\left[Fe(CN)_6\right]_3 \cdot xH_2O$

List-$I$ (Functional group detection)	List-$II$ (Change observed during detection)
$A$. Unsaturation (Baeyer's test)	$I$. Red colour appears
$B$. Alcoholic group (Ceric ammonium nitrate test)	$II$. Silver mirror appears
$C$. Aldehyde group (Tollen's reagent)	$III$. Violet colour appears
$D$. Phenolic group ($FeCl_3$ test)	$IV$. Discharge of pink colour

Sodium fusion extract of aniline,when heated with ferrous sulphate solution and then acidified with concentrated $H_2SO_4$,forms which of the following complexes?

Similar Questions

What can be inferred if a blood-red color is obtained in the Lassaigne's test?

The Lassaigne's extract is boiled with dilute $HNO_3$ before testing for halogens because,

Assertion : During the test for nitrogen with Lassaigne's extract,on adding $FeCl_3$ solution,sometimes a blood-red coloration is obtained.
Reason : Sulphur is also present along with nitrogen in the organic compound.

When sodium fusion extract of an organic compound is boiled with iron$(II)$ sulphate solution followed by addition of concentrated $H_2SO_4$,it gives a Prussian blue colour. This confirms the presence of which element?

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