Fluorine is prepared by - Vidyadip

MCQ

Fluorine is prepared by

A
Oxidation of $HF$
B
Electrolysis of $KF$
✓
Electrolysis of fused $KH{F_2}$
D
Decomposition of $Hg{F_2}$

✓

Answer

Correct option: C.

Electrolysis of fused $KH{F_2}$

c
(c) $KH{F_2}\, \to \,KF + HF$

$KF\, \to \,{K^ + } + {F^ - }$

At cathode : ${K^ + } + {e^ - }\, \to \,K$; $2K + 2HF\, \to \,2KF + {H_2}$

At anode : ${F^ - }\, \to \,F + {e^ - }$; $F + F\, \to \,{F_2}$

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