The electrolysis of water with a Hoffmann voltmeter

The experiment allows you to perform the electrolysis of water with a Hoffman voltameter. The electrolysis of the water occurs when there is an electrolyte present in the solvent. The electrolyte can be an acid, a base, a dissociated salt. The experiment allows you to experiment with all three situations. We mount the voltmeter on its support by inserting the electrodes, mounted on rubber plugs, in the holes of the two side tubes. We fill the appliance by pouring the chosen solution through the upper hole. The electrodes are connected via two cables to the D.C. generator. When we switch on the generator, there is a development of gas to both electrodes.