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In Hall's process , in the production of...

In Hall's process , in the production of `Al,` carbon is used as the anode material. The reactions are

A

Anode `: Al^(3+)+3e^(-) rarr Al`
Cathode `:C(s)+2O^(2-) rarr CO_(2)(s)+4e^(-)`

B

Anode`:C(s)+2O^(2-) rarr CO_(2)(g)+4e^(-)`
Cathode `:Al^(3+)+3e^(-) rarrAl`

C

Anode `: Alrarr Ae^(3+)+e^(-)`
Cathode `:CO_(2)+4e^(-) rarr C(s)+2O^(2-)`

D

None of these

Text Solution

Verified by Experts

The correct Answer is:
b
In the production of `Al(` in Hall's process `)`, reactions are `,`
Cathode `: Al^(3+)+3e^(-) rarr Al`
Anode `:2O^(2-) rarr O_(2)+4e^(-)`
`C+O_(2) rarr CO_(2)`
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