In electrometallury of aluminium , what will happen if graphite rodes are not used as anode and are replaced by some other metal ?

Options

A. `O_(2)` liberated at node will react with aluminium to give back `Al_(2)O_(3)`
B. `F_(2)` will be liberated at anode instead of `O_(2)`
C. The process of electrometallurgy will become non-spontaneous
D. Aluminium oxide splits into `Al^(3+)` and `O^(2-)` ions only in presence of graphite

Answer

A

Explanation

If some other metal is used as the anode other than graphite then the oxygen liberated at anode will convert some Al to `Al_(2)O_(3)`.