Electrolysis of water. Hydrogen gas bubbles produced at cathode in a Brownlee electrolysis apparatus. Electrolysis is a decomposition of water into oxygen and hydrogen due to electric current. Here current is supplied by a 9 V battery through two electrodes, anode (positive electrode) and cathode (negative electrode). Anode half-reaction: H2O -> O2 + H+ + e- (oxidation), cathode half-reaction: H+ + e- -> H2 (reduction). Complete balanced reaction: 2 H2O -> 2 H2 + O2. A small amount of sulfuric acid has been added to water to act as an electrolyte and speed up the process. | |
Lizenzart: | Lizenzpflichtig |
Credit: | Science Photo Library / Giphotostock |
Bildgröße: | 3402 px × 5142 px |
Modell-Rechte: | nicht erforderlich |
Eigentums-Rechte: | nicht erforderlich |
Restrictions: | - |