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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_2SO_4`,
At cathode: `2H^(+) +2e^(-) to H_(2(g))`(Reduction)
At anode: `2HSO_4^(-) to H_2S_2O_8 + 2e^(-)` (Oxidation)
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