Analytical Chemistry Question 7
Question: When $ Cl_2 $ water is added to a salt solution containing chloroform, chloroform layer turns violet. Salt contains
[CPMT 1982]
Options:
A) $ C{l^{-}} $
B) $ {I^{-}} $
C) $ NO_3^{-} $
D) $ {S^{2-}} $
Show Answer
Answer:
Correct Answer: B
Solution:
As $ C{l^{-}} $ is more electronegative than $ B{r^{-}} $ and $ {I^{-}} $
$ \therefore $ it replaces them from their salt as $ 2{I^{-}}+Cl_2\to I_2+2C{l^{-}}\Rightarrow Violet\ vapour $
$ 2B{r^{-}}+Cl_2\to Br_2+2C{l^{-}}\Rightarrow \text{Brown vapour} $
BETA
