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In the electrolysis of which solution O...

In the electrolysis of which solution `OH^(-)` ions are discharged in preference to `Cl^(-)` ions?

A

Dilute NaCl

B

very dilute NaCl

C

fused NaCl

D

solid NaCl

Text Solution

Verified by Experts

The correct Answer is:
B
In very dilute solution of `NaCl`, the following reactions take place on electrolysis:
Anode: `2OH^(-)toH_(2)O+(1)/(2)O_(2)+2e^(-)`
Cathode: `2H^(+)+2e^(-)toH_(2)`
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