In an electrolytic tank, aluminium metal is being extracted by the electrolysis of molten aluminium oxide using carbon electrodes. It is observed that one of the carbon electrodes is gradually burnt away and has to be replaced.
(a) Which carbon electrode (cathode or anode) is burnt away?
(b) Why is this carbon electrode burnt away?
Answers
Answered by
5
Answer:
a) Anode
b) Due to oxygen gas liberated at cathode and reaction between cathode and anode leads to formation of carbon dioxide.
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Answered by
4
Answer:
a. anode
b. due to O is liberated in cathode reaction
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