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Question

The gas released at the cathode when acidulated water is electrolysed is :

A
O2
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B
H2
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C
both A and B
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D
none of these
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Solution

The correct option is B H2
During electrolysis of acidified water,
At anode: 2H2OO2+4H++4e
At cathode: 4H2O+4e2H2+4OH

179033_191114_ans.gif

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