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When 50%solution of H2SO4 is electrolyse...

When 50%solution of `H_2SO_4` is electrolysed by passing a current of high density at low temperature the main products of electrolysis are:

A

oxygen and hydrogen

B

`H_(2)`, and peroxo disulphuric acid

C

`H_(2)`, and `SO_(2)`

D

`O_(2)`, and peroxy disulphuric acid

Text Solution

Verified by Experts

The correct Answer is:
B
On electrolysis of cold 50% soultion of `H_(2) SO_(4)`
At cathode : `2H^(+) + 2 e^(-) rarr H_(2_((g))) ` (Reduction )
At anode : `2HSO_(4)^(-) rarr H_(2 S_(2) O_(8) + 2e^(-) ` (Oxidation )
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