What is a concentration electrochemical cell?
Answer:Ozone is destroyed by reactions with chlorine, bromine, nitrogen, hydrogen, and oxygen gases.Reactions with these gases typically occurs through catalytic processes. A catalytic reactioncycle is a set of chemical reactions which result in the destruction of many ozone moleculeswhile the molecule that started the reaction is reformed to continue the process. Because ofcatalytic reactions, an individual chlorine atom can on average destroy nearly a thousand ozonemolecules before it is converted into a form harmless to ozone.When ultraviolet light waves (UV) strike CFC* (CFCl3) molecules in the upper atmosphere, acarbon-chlorine bond breaks, producing a chlorine (Cl) atom. The chlorine atom then reacts withan ozone (O3) molecule breaking it apart and so destroying the ozone. This forms an ordinaryoxygen molecule(O2) and a chlorine monoxide (ClO) molecule. Then a free oxygen** atombreaks up the chlorine monoxide. The chlorine is free to repeat the process of destroying moreozone molecules. A single CFC molecule can destroy 100,000 ozone molecules.Ozone depletion reactions are involve only the elemental oxygen having 0 oxidationnumbers(O3,O2,O) and no change in the oxidation state for oxygen atoms .