Co-Ordination Compounds Question 56
Question: In any ferric salt, on adding potassium ferrocyanide, a prussian blue colour is obtained, which is
[BIT 1992; BHU 2002]
Options:
A) $ K_3Fe{{(CN)}_6} $
B) $ KFe[ Fe{{( CN )}_6} ] $
C) $ FeSO_4.Fe{{(CN)}_6} $
D) $ Fe_4{{[ Fe{{(CN)}_6} ]}_3} $
Show Answer
Answer:
Correct Answer: D
Solution:
$ \underset{pot\text{.ferrocyanide}}{\mathop{3,K_4[Fe{{(CN)}_6}]+4FeCl_3}},\to \underset{\text{(Prussion blue)}}{\mathop{\underset{\text{(Ferri ferrocynide)}}{\mathop{Fe_4{{[Fe{{(CN)}_6}]}_3}+,12KCl}},}}, $
