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In Hall's process, the main reagent is m...

In Hall's process, the main reagent is mixed with

A

NaF

B

`Na_3 AIF_6`

C

`AIF_3`

D

none of these

Text Solution

Verified by Experts

The correct Answer is:
B
`Na_3 AIF _6 to ` Cryolite
` Al_2 O_3 ` is maxed with cryolite
Cryolite improves the electrical conductivity of the cell as `Al_2 O_3 ` is a poor conductor . In addition , the cryolite serves as an added impurity and lowers the melting point of the mixture to about `950^@ C`
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