In any ferric salt,on adding potassium ferroc | vedclass

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Question

(D) When potassium ferrocyanide $(K_4[Fe(CN)_6])$ is added to a ferric salt (e.g.,$FeCl_3$),a deep blue precipitate known as Prussian blue is formed.T

Vedclass · Accepted Answer

$Fe_4[Fe(CN)_6]_3$

Vedclass · Answer

(D) When potassium ferrocyanide $(K_4[Fe(CN)_6])$ is added to a ferric salt (e.g.,$FeCl_3$),a deep blue precipitate known as Prussian blue is formed.The chemical reaction is:$3 K_4[Fe(CN)_6] + 4 FeCl_3 \rightarrow Fe_4[Fe(CN)_6]_3 + 12 KCl$The compound $Fe_4[Fe(CN)_6]_3$ is ferric ferrocyanide,which is responsible for the Prussian blue colour.

In any ferric salt,on adding potassium ferrocyanide,a Prussian blue colour is obtained,which is:

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