Redox Reactions And Electrochemistry Ques 233
Question: On the electrolysis of aqueous solution of sodium sulphate, on cathode we get [MP PMT 1992, 2002]
Options:
A) $ Na $
B) $ H_2 $
C) $ SO_2 $
D) $ SO_3 $
Show Answer
Answer:
Correct Answer: B
Solution:
Water is reduced at the cathode and oxidized at the anode instead of $ N{a^{+}} $ and $ SO_4^{2-} $ . Cathode: $ 2H_2O+2{e^{-}}\to H_2+2O{H^{-}} $ Anode : $ H_2O\to 2{H^{+}}+\frac{1}{2}O_2+2{e^{-}} $ .
