Question

Why alkali metals are prepared by electrolysis?

Answer 1

Alkali metals cannot be obtained by the electrolysis of the aqueous solution of their salts because H2 is liberated at cathode instead of alkali metal. That's why alkali metals are prepared by electrolysis of their fused chloride.

Answer 2

Alkali metals cannot be obtained by the electrolysis of the aqueous solution of their salts because H2 is liberated at cathode instead of alkali metal. That's why alkali metals are prepared by electrolysis of their fused chloride.