Redox Reactions And Electrochemistry Ques 251
Question: In electrolysis of aqueous copper sulphate, the gas at anode and cathode is [AFMC 1995]
Options:
A) $ O_2 $ and $ H_2 $
B) $ SO_2 $ and $ H_2 $
C) $ H_2 $ and $ O_2 $
D) $ SO_3 $ and $ O_2 $
Show Answer
Answer:
Correct Answer: A
Solution:
Cathode: $ 2H_2O+2{e^{-}}\to H_2+2O{H^{-}} $ Anode : $ H_2O\to 2{H^{+}}+\frac{1}{2}O_2+2{e^{-}} $ .
