Advertisements
Advertisements
Question
Why is so much graphite required for this electrolytic process?
Short Answer
Advertisements
Solution
A large amount of graphite is required because the carbon anodes are gradually consumed during electrolytic aluminium extraction. The oxygen liberated at the anode reacts with the carbon to form carbon dioxide and carbon monoxide.
\[\ce{C + O2 -> CO2}\]
\[\ce{2C + O2 -> 2CO}\]
Therefore, graphite anodes must be replaced frequently.
shaalaa.com
Is there an error in this question or solution?
Chapter 7: Metallurgy - Questions from ICSE Examinations [Page 177]
