MCQ
Fluorine is prepared by
- AOxidation of $HF$
- BElectrolysis of $KF$
- ✓Electrolysis of fused $KH{F_2}$
- DDecomposition of $Hg{F_2}$
✓
Answer
Correct option: C.
Electrolysis of fused $KH{F_2}$
c
(c) $KH{F_2}\, \to \,KF + HF$
(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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