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Aqueous NaCl solution is electrolyzed us...

Aqueous NaCl solution is electrolyzed using platinum electodes. What is the product formed at cathode?

A

Na

B

`H_(2)`

C

`O_(2)`

D

`Cl_(2)`

Text Solution

Verified by Experts

The correct Answer is:
B
Since `H_(2)O` has higher reduction potential (at Pt) than `Na^(+)` ions, `H_(2)` gas is liberated at cathode:
`2H_(2)O+2e^(-)rarrH_(2)(g)+2OH^(-)`
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