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When CuSO(4) is electrolysed, using Pt e...

When `CuSO_(4)` is electrolysed, using Pt electrodes

A

Copper is liberated at cathode and sulphur at anode

B

Copper is liberated at cathode and oxygen at anode

C

Sulphur is liberated at cathode and oxygen at anode

D

Oxygen is liberated at cathode and copper at anode

Text Solution

Verified by Experts

The correct Answer is:
B
(b) `CuSO_(4)overset((aq)) to Cu^(2+)(aq)+SO_(4)^(2-)(aq)`
`H_(2)O overset((aq))hArr H^(+)(aq)+OH^(-)(aq)`
At cathode : `Cu^(2+)(aq)+2e^(-) to Cu(s)`
At anode : `4OH^(-)(aq) to 2H_(2)O(aq)+O_(2)(g)+4e^(-)`
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