MetallurgyHard
Question
In the electrolysis of molten alumina during the manufacture of aluminium :
Options
A.Al2O3 undergoes dissociation
B.cryolite undergoes dissociation
C.Al2O3 and cryolite both undergo dissociation
D.Neither of the two undergoes dissociation
Solution
Na3AlF6 or 3NaF. AlF3
NaF
Na+ + F- ; AlF3 
Al3+ + 3F-
NaF
Na+ + F- ; AlF3 Al3+ + 3F-Create a free account to view solution
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