First slide
Chemical properties
Question

The gases liberated during the electrolysis of aqueous solution of hydrogen fluoride

Easy
Solution

Anode(+) F- +H2O→ O2 +HF + e-

Cathode(-):H+ + e- →1/2 H2

HF in water week electrolyte and can not be completely ionized and moreover SRP of Fluorine is much higher than oxygen so, At anode O2 liberate can not F2

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