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Grade: 10

                        

O2 has more discharge potential or OH has more discharge potential???

one year ago

Answers : (3)

Arun
24738 Points
							

The two ions that u have asked are actually anions. These will get oxidized at anode during electrolysis.

Here the discharge potential in this case is actually the oxidation potential. The ion having greater oxidation potential will get discharged earlier at the anode.

Taking in view the Standard Oxidation Electrode potential of the ions, it is clearly inferred that OH- have relatively greater oxidation potential than O2-

Therefore, O2- have less discharge potential than OH-

Let me also clarify the hypertalked Electrolysis of H2O. Here, H+ having greater reduction potential is discharged at cathode.. At Anode OH- should be discharged not O2-. But due to ‘overpotential’ O2- is oxidized to O2 not OH-

one year ago
Vikas TU
12133 Points
							
Dear student 
O2 is bulkier than OH group , so , obviously it will be having less discharge potential than OH group. 
Hope this will clear your doubt. 
Good Luck 
11 months ago
Sai Soumya
99 Points
							
O2 will be discharged.
You can refer to the NCERT book for the elctrode potential series and get an breif idea which will be discharged first
11 months ago
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