1.

Light green solution of (A)does not give bluecoloured ppt . With K_(4)[Fe(CN)_(4)] but on adding a drop of HNO_(3) blue ppt .(B) appears .However (A) gives blue colour (C ) with K_(4)[Fe(CN)_(6)] Example the formation of (B) and (C ) identify (A) if (A) also gives while ppt , with AgNO_(3) solution

Answer»

Solution :(A) `FeCI_(2)`
(B) `Kfe^(III)[Fe^(II)(CN)_(6)]` prassian blue
(C ) `KFe^(II) [Fe^(II)(CN)_(6)]` Turnull's blue


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