Analytical Chemistry Question 114
Question: A reagent used to test the presence of $ F{e^{2+}} $ ion is
[KCET 1998]
Options:
A) $ H_2S $
B) $ NH_4CNS $
C) $ K_4Fe{{(CN)}_6} $
D) $ K_3Fe{{( CN )}_6} $
Show Answer
Answer:
Correct Answer: D
Solution:
$ 3FeCl_2+2K_3[Fe{{(CN)}_6}]\to \underset{\text{blue }colour}{\mathop{Fe_3{{[Fe{{(CN)}_6}]}_2}}}+6KCl $
BETA
