I recall doing an experiment in high school where I added a drop of HCl to water and then applied an electric current to the water in the vessel - there were tw

I recall doing an experiment in high school where I added a drop of HCl to water and then applied an electric current to the water in the vessel - there were two vents and applying a flame to one of the areas near the bubbling electrodes resulted in a clean flame pop, a signature of hydrogen. Edit0: syntax corrections.