Industrial Application of Electrolysis:
Electrolysis has many varied industrial applications. The extraction of metals from their ores, in particular aluminium, and the purification of metals, especially copper, are important industrial uses.
Another large scale use of electrolysis is in the manufacture of the important alkali, sodium hydroxide. This is produced by the electrolysis of concentrated sea water. The chlorine and hydrogen gases which are produced during this electrolysis are both commercially useful.
Finally, electrolysis is used for electroplating, which is the forming of a thin protective coating of a metal on the surface of another which is likely to corrode.