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  • The potassium ferrocyanide solution gives a Prussian blue colour, when added to:Option: 1 Option: 2 <img alt="\mathrm{Co

The potassium ferrocyanide solution gives a Prussian blue colour, when added to:
Option: 1 \mathrm{COCl}_{3}
Option: 2 \mathrm{CoCl_{2}}
Option: 3 \mathrm{FeCl_{2}}
Option: 4 \mathrm{FeCl_{3}}

Answers (1)

best_answer

Prussian Blue is formed when \mathrm{K_{4}\left [ Fe\left ( CN \right ) _{6}\right ]}  reacts with ferric ions

\mathrm{K_{4}\left [ Fe\left ( CN \right ) _{6}\right ]+Fe^{3+}\rightarrow \underset{Prussian\ Blue}{Fe_{4}\left [ Fe\left ( CN \right )_{6} \right ]}}

Hence, the correct answer is option (4)

Posted by

sudhir.kumar

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