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

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

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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$

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?

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