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