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Question
Chemistry
Which one of the following statements is correct for electrolysis of brine solution? is
Q. Which one of the following statements is correct for electrolysis of brine solution? is
185
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JEE Main
JEE Main 2023
Electrochemistry
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A
O
H
−
is formed at cathode
50%
B
C
l
2
is formed at cathode
50%
C
O
2
is formed at cathode
0%
D
H
2
is formed at anode
0%
Solution:
Electrolysis of brine solution
N
a
Cl
(
a
q
.
)
⟶
N
a
(
a
q
)
+
+
C
l
(aq)
+
At anode
:
2
C
l
(aq.)
+
⟶
(Major)
C
l
2
(
g
)
+
2
e
−
2
H
2
O
(
ℓ
)
⟶
Minor
O
2
(
g
)
+
4
H
(
a
q
)
+
+
4
e
−
At Cathode :
2
H
2
O
(
ℓ
)
+
2
e
−
⟶
H
2
(
g
)
↑
+
2
O
H
(
a
q
)
−
2
N
a
+
+
2
O
H
−
⟶
2
N
a
O
H