How exactly step by step do i separate H20 into Hydrogen and Oxygen by electrolysis?
As explained in the link proposed by the first answer, this is the technique that can be used. Unfortunately, most of the materials and equipment usually used, and required, are not available to the average person. They are accessible in laboratories and other places that are involved in the analysis and separation of matter. Ideally, when an electric current is passed through the water it in effect ‘severs’ the bond, in the most simplest terms, reducing water into its separate components. Once again, it is my opinion (having said that, I do not purport to know you or your circumstances) that you would have no conceivably safe way to conduct this experiment.
The production of H2 and O2 by electrolysis is simple. Dissolve some baking soda in some water. The NaHCO3 will be the electrolyte so that water can conduct electricity. The simplest electrolysis “experiment” would be to then drop a 9V batter into the solution. But you want something more elegant than that. There are many, many pages on the web devoted to the electrolysis of water. I would take two pencils and cut off the erasure ends and sharpen both ends of each pencil. These will be your graphite electrodes. They can be stuck through some cardboard at an angle and down into the sodium carbonate solution. A small bottle can be filled with water and then inverted so that its mouth is over one of the pencil electrodes. When a 9V battery is connected to the pencil points sticking up from the cardboard, H2 and O2 gases will be formed. The hydrogen will form at the pencil connected to the negative pole of the battery. The bubbles will rise into the inverted bottle and displace the water,
