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In the extraction of Aluminimum by elect...

In the extraction of Aluminimum by electrolysis.
i. Give the composition of electrolyte used
ii. Overall cell reaction
iii. Role of cryolite

Text Solution

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i. `"Molten "Al_(2)O_(3)+Na_(3)AlF_(6)|CaF_(2)`
ii. `2Al_(2)O_(3)+3C rarr 4Al+3CO_(2)`
iii. To decrease melting point of alumina.
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