why we cannot get F2 by electrolysis of aqueous solution of HF?Explain in detail.
The electrolysis of HF will produce F2.
At anode : HF F2 + 2H+ +2e-
At cathode : 2H+ + 2e- H2
The liberated F2 will abstract hydrogen of water due to its high electronegativity.
F2 +H2O HF + O2
Therefore, electrolysis of aqueous HF will give oxygen instead of flourine since OH- ions are discharged easily as compared to the electronegative flouride ions.
At anode : HF F2 + 2H+ +2e-
At cathode : 2H+ + 2e- H2
The liberated F2 will abstract hydrogen of water due to its high electronegativity.
F2 +H2O HF + O2
Therefore, electrolysis of aqueous HF will give oxygen instead of flourine since OH- ions are discharged easily as compared to the electronegative flouride ions.