Analytical Chemistry Question 285
Question: Acidic solution of $ S_2O_3^{2-} $ is converted to ……. in presence of $ I_2 $
[Orissa JEE 2005]
Options:
A) $ S_4O_6^{2-}+{I^{-}} $
B) $ SO_4^{2-}+{I^{-}} $
C) $ SO_3+{I^{-}} $
D) $ S_4O_6^{2-}+I_3^{-} $
Show Answer
Answer:
Correct Answer: A
Solution:
$ I_2+Na_2S_2O_3\to 2NaI+Na_2S_4O_6 $
$ I_2+S_2O_3^{2-}\to 2{I^{-}}+S_4O_6^{2-} $
BETA
