Analytical Chemistry Question 270
Question: The sodium extract prepared from sulphanilic acid, contains $ SC{N^{-}} $ . It gives blood red colouration with
Options:
A) a mixture of $ Na_2S $ and $ CS_2 $
B) $ FeCl_3 $
C) $ FeSO_4 $
D) $ Na_2SO_3 $
Show Answer
Answer:
Correct Answer: B
Solution:
[b] $ SC{N^{-}}+F{e^{3+}}\xrightarrow{{}}\underset{bloodredppt.}{\mathop{Fe{{(SCN)}_3}}} $