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  • Ferric ion forms a prussian blue coloured precipitate upon reaction with Potassium Ferrocyanide. This prussian blue compound is Option: 1 <img a

Ferric ion forms a prussian blue coloured precipitate upon reaction with Potassium Ferrocyanide. This prussian blue compound is 

Option: 1

K_{4} F e(C N)_{6}


Option: 2

\mathrm{Fe}_{4}\left[\mathrm{Fe}(\mathrm{CN})_{6}\right]_{3}


Option: 3

\mathrm{KMnO}_{4}


Option: 4

\mathrm{Fe}(\mathrm{OH})_{3}


Answers (1)

best_answer

Ferric ions form a Prussian blue precipitate on reaction with Potassium Ferrocyanide. This is because of the formation of Ferric Ferrocyanide \mathrm{(Fe_4[Fe(CN)_6]_3)} 

4 \mathrm{FeCl}_{3}+3 \mathrm{~K}_{4}\left[\mathrm{Fe}(\mathrm{CN})_{6}\right] \rightarrow \mathrm{Fe}_{4}\left[\mathrm{Fe}(\mathrm{CN})_{6}\right]_{3}+12 \mathrm{KCl}

Hence, the correct answer is Option (2)

Posted by

Pankaj

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