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Byju's Answer
Standard IX
Chemistry
Preparation of Hydrogen
When the elec...
Question
When the electrolysis of acidified water is carried out,
the equation for the discharge of ions at the cathode is:
A
2
H
2
O
→
O
2
+
4
H
+
+
4
e
−
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B
2
H
2
O
→
O
2
+
2
H
2
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C
4
H
2
O
+
4
e
−
→
4
H
2
+
O
2
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D
4
H
2
O
+
4
e
−
→
2
H
2
+
4
O
H
−
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Solution
The correct option is
B
4
H
2
O
+
4
e
−
→
2
H
2
+
4
O
H
−
During electrolysis of water,
At anode:
2
H
2
O
→
O
2
+
4
H
+
+
4
e
−
At cathode:
4
H
2
O
+
4
e
−
→
2
H
2
+
4
O
H
−
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