Q. What are the electrode products in the extraction of aluminium?
Solution:
Aluminium ore is called bauxite . The bauxite is purified to produce aluminium oxide, a white powder from which aluminium can be extracted. The extraction is done by electrolysis. The ions in the aluminium oxide must be free to move so that electricity can pass through it.
During electrolysis:
- Positively charged aluminium ions gain electrons from the cathode, and form molten aluminium .
- Oxide ions lose electrons at the anode, and form oxygen molecules .
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