Chemistry, asked by AliVatsal5952, 1 year ago

Role of cryolite in the extraction of aluminium from pure alumina

Answers

Answered by nain31

$\bold{Electrolytic \: reduction \: of \: Aluminium}$

◼Aluminium is a metal and almost non electrolyte with high boiling and melting point around 2050 degress so a large amount of heat energy is required to attain aluminium while to attain such high temperature much of fuel was getting wasted .

◼The pure aluminium that will be obtained may get volatize and may get wasted.

So fused cryolite is added because:-

▶It lowers the fusion point if mixture to 950 from 2050 degrees.

▶It enchances the mobility the fused mixture .It dissolves the aluminium oxide.

▶It enchances the conductivity of the mixture since , pure alumina is a non conductor of electricity.

Answered by Anonymous

a) Role of cryolite

It lowers the melting points of the mixture .

It makes alumina a good conduction of electricity

(b) When nickel is heated with carbon monoxide it forms a volatile complex nickel tetracarbonyl which on further heating at higher temperature decomposes to give pure nickle.

aadarsh001: jaan-e-maan

nain31: dont do useless comment ,just do aprreciation

aadarsh001: shut up

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