Chemistry-
General
Easy
Question
Extractionofaluminiumcanbeunderstoodby:
Electrolytic reduction of 
Electrolytic:( +Cryolite+
)
Cathode: Carbon inside the Fe-container
Anode: Graphite rods
The molten electrolytes contain 
, and 
only Al gets deposited at cathode because:
- Standard reduction potential of
is more than thatof 
and 
- Standard oxidation potential of is more than that of and
- Discharge potential
of higher than 
and
- Graphite reacts only with and not with and
is more than thatof and
is more than that of and
of higher than and
and not with and
The correct answer is: Standard reduction potential of is more than thatof and
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Extraction of aluminium can be understood by:
Electrolytic reduction of
Electrolytic:( +Cryolite+)
Cathode: Carbon inside the Fe-container
Anode: Graphite rods
The function of fluorspar()is:
Extraction of aluminium can be understood by:
Electrolytic reduction of
Electrolytic:( +Cryolite+)
Cathode: Carbon inside the Fe-container
Anode: Graphite rods
The function of fluorspar()is:
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