Question

Here's A Question!!
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Why is Graphite Anode replaced from time to time?
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Answer 1

Answer:

Heyy!

Explanation:

Reaction at the Anode ⇒

2O²⁻ - 4e⁻ ----------→ O₂

Now, this Oxygen reacts with the Carbon,

∴ C + O₂ -----------→ CO₂

To prevent that oxidation, Anode are replaced from time to time.

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Answer 2

Answer:

HEY MATE,

HERE'S YOUR ANSWER.

=> During the electrolysis process, aluminium is deposited at the cathode and oxygen is liberated at the anode. Some of this oxygen reacts with the carbon in the graphite to form carbon-dioxide, thus slowly burning away the anodes. Thus, the anodes have to replaced periodically.

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