© examsnet.com
Question : 4
Total: 35
Four half reactions I to IV are shown below:
I.2 C l − → C l 2 + 2 e −
II.4 O H − → O 2 + 2 H 2 O + 2 e −
III.N a + + e − → N a
IV.2 H + + 2 e − → H 2
Which two of these reactions are most likely to occur when concentrated brine is electrolysed?
I.
II.
III.
IV.
Which two of these reactions are most likely to occur when concentrated brine is electrolysed?
Solution: 👈: Video Solution
Explanation:
At anode2 C l − → C l 2 + 2 e −
(2) At cathode
N a + + e − → N a = E o = − 2.71 V
2 H + + 2 e − → H 2 , E o = 0 ~ V
Those have highE o
At anode
(2) At cathode
Those have high
© examsnet.com
Go to Question: