Question

what is the reason for changing carbon rods in electrolysis of alumina? Don't spam.....​

Answer 1

Answer:

(1)During electrolysis of alumina, the oxygen liberated at the carbon anode reacts with graphite rods (carbon anode) and forms carbon dioxide.

(2) As the anodes gets oxidised during electrolysis of alumina, they are continuously eroded. Hence, it is necessary to replace anodes from time to time.

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Answer 2

Answer:

Anode has to be replaced time to time in this process as it gets oxidise by the oxygen gas evolve at the anode

Anode is oxidise to carbon monoxide which is further oxidised into carbon-di-oxide