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A 1 M solution of H2SO4 is electrolysed....

A 1 M solution of `H_2SO_4` is electrolysed. Select correct statement in respect of products obtain at anode and cathode respectively:
Given : `2SO_4^(2-) toS_2O_8^(2-)+2e^-,E^(@)=-1.23V`
`H_2O(l)to2H^+(aq)+1//2O_2(g)+2e^-,E^(@)=-1.23V`

A

concentration of `H_(2)SO_(4)` remain constant , `H_(2) , O_(2)`

B

concentration of `H_(2) SO_4` increases , `O_(2) , H_(2)`

C

concentration of `H_(2) SO_(4)` decreases , `O_(2) , H_(2)`

D

concentration of `H_(2)SO_(4)` remains constant , `S_(2) O_(8)^(2-) , H_(2)`

Text Solution

Verified by Experts

The correct Answer is:
B
`E_(SO_(4)^(2-) | S_(2) O_(8)^(2-))^(@) lt E_(H_(2) O|O_(2))`
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