How can hydrochloric acid be split up to form hydrogen and chlorine?

Answer 1

HCl can be split into hydrogen and chlorine by subjecting it to electrolysis. If it is in an aqueous solution, you will get the chlorine mixed with oxygen.

Answer 2

Hydrochloric acid (HCl) can be split up into hydrogen gas (H2) and chlorine gas (Cl2) through a process called electrolysis. When an electric current is passed through a concentrated solution of hydrochloric acid, the hydrogen ions (H+) are reduced at the cathode to form hydrogen gas, and the chloride ions (Cl-) are oxidized at the anode to form chlorine gas.