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Acidic ferric chloride solution on treat...

Acidic ferric chloride solution on treatment with excess of potassium ferrocyanide gives a Prussian blue cloured colloidal species. It is

A

`KFe[Fe(CN)_(6)]`

B

`HFe[Fe(CN)_(6)]`

C

`Fe_(4)[Fe(CN)_(6)]_(3)`

D

`K_(5)Fe[Fe(CN)_(6)]_(2)`

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