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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 case of very dilute solution of NaCl , electrolysis brings in the following changes .
Anode :` 2OH^(-) to H_(2)O + (1)/(2) O_(2) + 2e`
Cathode : ` 2H^(+) + 2 e to H_(2)`
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