Aluminium is extracted by the electrolysis of: | Chemistry | SolveeIt | Solveeit

Today, October 4

Question

Aluminium is extracted by the electrolysis of:

A

alumina

B

bauxite

C

molten cryolite

D

alumina mixed with molten cryolite

Answer

alumina mixed with molten cryolite

Explanation

Solution

Aluminium is extracted by electrolysis of a fused mixture of alumina (2-8%) synthetic cryolite $Na_3AlF_6$ (80-85%), $AlF_3$ and fluorspar. This makes alumina good conductor and lowers the fusion temperature also.