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When acetic acid and K_{4} F e(C N)_{6} is added to a copper salt, a chocolate precipitate is obtained of the compound

Option: 1

Copper cyanide


Option: 2

Copper ferrocyanide


Option: 3

Basic copper sulphate


Option: 4

Basic copper cyanide


Answers (1)

best_answer

Cupric ions react with Potassium Ferrocyanide to form brown precipitate of Cupric Ferrocyanide as given below

 \mathrm{2 Cu \left( NO _{3}\right)_{2}+ K_4 \left[ Fe ( CN )_{6}\right] \rightarrow \underset{Chocolate\ brown}{Cu _{2} Fe ( CN )_{6}}+4 KNO _{3}}

Hence, the correct answer is Option (2)                                            

Posted by

Sanket Gandhi

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