(a) Name the chemical compound which is electrolysed in a molten state to obtain aluminium metal. Which gas is evolved during this process? (b) Name the chemical compound which is electrolysed in the molten state to obtain sodium metal. Which gas is produced in this process?
Solution:
(a) To get aluminium metal, aluminum oxide is electrolyzed in a molten condition. During the process, oxygen gas is produced.
(b) To produce sodium metal, sodium chloride is electrolyzed in a molten condition. During this procedure, chlorine gas is produced.
