Question

Why is electrolysis the method of choice in extraction of aluminium

Answer 1

The method used to extract metals from the ore in which they are found depends on their reactivity. For example, reactive metals such as aluminium are extracted by electrolysis, while a less-reactive metal such as iron may be extracted by reduction with carbon or carbon monoxide.

Answer 2

Answer:

Electrolysis is expensive and so it is only used to extract reactive metals that cannot be extracted in other ways.

• aluminium loses oxygen, reduction takes place.