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The major role of flourspar, CaF(2) whic...

The major role of flourspar, `CaF_(2)` which is added in small amount in the electrolytic reduction of `Al_(2)O_(3)` dissolved on fused cryolite in fused cryolite is

A

as a catalyst

B

to lower the temperature of the melt and improve the conductivity of cell

C

to decrease the rate of oxidatiom of carbon at the anode

D

to decrease the raet of oxidaiton of carbon at the cathode

Text Solution

Verified by Experts

The correct Answer is:
B
`CaF_(2)` and `Na_(3)A1F_(6)` are added to decrease the melting point of electrolyte and increase the conductivity if cell.
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