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Extraction of Aluminiunt can be understo...

Extraction of Aluminiunt can be understood by :

Electrolytic reduction of `Al_(2)O_(3) :`
`{:("Electrolyte",:(Al_(2)O_(3)+"Cryolite")),("Cathode",:"Graphite inside the Fe container"),("Anode",:"Graphite rods"):}`
The purpose of adding cryolite is

A

to increase the electrical conductivity of pure aluminium

B

to lower the melting point of `Al_(2)O_(3)`

C

to remove the impurities as slag

D

to increase the Al %in the yield

Text Solution

Verified by Experts

The correct Answer is:
B
By adding Cryolite M.pt of `Al_(2)O_(3)` decreases, conductivity of `Al_(2)O_(3)` increase
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