How would you describe and diagram the electrolysis of aluminium oxide?
1 Answer
Here's how I would do it.
Explanation:
Aluminium is prepared by the electrolysis of aluminium oxide,
Instead, it is dissolved in molten cryolite,
The dissolved
The anodes of the electrolysis cell are made of graphite (carbon), and the graphite lining of a steel tank also serves as the cathode.
The
The cell reactions are
Aluminium (m.p. 933 °C) forms at the cathode and sinks to the bottom of the tank, where it is tapped off as the pure molten metal.
Oxygen forms at the anodes. It reacts with the graphite, forming carbon dioxide, and the electroded gradually burn away.
The following video give a more detailed description of the extraction of aluminium.