Electrolysis of acidified water (dilute sulphuric acid)

          The electrolysis of dilute sulphuric acid is described and explained. The electrolysis of an aqueous solution of dilute sulphuric acid is often carried out in a  Hofmann Voltammeter. Gases are produced at both the anode and the cathode. For every hydrogen ion discharged at the cathode, another hydrogen ion is formed at the anode. The net result is that the concentration of the sulphuric acid remains constant and this electrolysis consists of the decomposition of water :