Chemistry, asked by Jaidev2005, 6 months ago

Electrolytic reduction of alumina to pure aluminium metal , name of this process

a. contact
b.Hall Heraults​

Answers

Answered by ramyadukuntla
1

Explanation:

ANSWER

The electrolysis of pure alumina faces some difficulties. Pure alumina is a bad conductor of electricity. The fusion temperature of pure alumina is about 2000

C and at this temperature when electrolysis is carried out on the fused mass, the metal formed vaporizes, as the boiling point of aluminium is 1800

C. These difficulties are overcome by using a mixture containing alumina, cryolite (Na

3

.AlF

6

), and fluorspar (CaF

2

) which forms a melt with lower melting temperature.

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