How is ozone layer damaged?

A group of chemicals known as halocarbons destroy ozone. The most familiar of these are chlorofluorocarbons (CFCs).





Aerosols and old refrigerators have released CFCs into the atmosphere. UV radiation breaks down CFCs in the upper stratosphere, releasing chlorine. Once released, chlorine becomes a catalyst of ozone destruction. A catalyst is something that makes a chemical reaction happen more easily, but it remains unchanged or reforms by the end of the reaction. It can then take part in the reaction again.





During this process, the ozone molecule is destroyed while the chlorine catalyst reforms. A single chlorine atom in the stratosphere can destroy about 100,000 ozone molecules.





How is ozone layer damaged?
A group of chemicals known as halocarbons destroy ozone. The most familiar of these are chlorofluorocarbons (CFCs).UV radiation breaks down CFCs in the upper stratosphere, releasing chlorine.





Aerosols and old refrigerators have released CFCs into the atmosphere. UV radiation breaks down CFCs in the upper stratosphere, releasing chlorine. Once released, chlorine becomes a catalyst of ozone destruction. A catalyst is something that makes a chemical reaction happen more easily, but it remains unchanged or reforms by the end of the reaction. It can then take part in the reaction again.





During this process, the ozone molecule is destroyed while the chlorine catalyst reforms. A single chlorine atom in the stratosphere can destroy about 100,000 ozone molecules. Once released, chlorine becomes a catalyst of ozone destruction. A catalyst is something that makes a chemical reaction happen more easily, but it remains unchanged or reforms by the end of the reaction. It can then take part in the reaction again.





Man-made chemicals have damaged the ozone layer that protects the earth from ultra violet (UV) radiation.Aerosols and old refrigerators have released CFCs into the atmosphere.


How is ozone layer damaged?
Man-made chemicals have damaged the ozone layer that protects the earth from ultra violet (UV) radiation.Aerosols and old refrigerators have released CFCs into the atmosphere. UV radiation breaks down CFCs in the upper stratosphere, releasing chlorine. Once released, chlorine becomes a catalyst of ozone destruction. A catalyst is something that makes a chemical reaction happen more easily, but it remains unchanged or reforms by the end of the reaction. It can then take part in the reaction again.
The ozone layer can be depleted by free radical catalysts, including nitric oxide (NO), hydroxyl (OH), atomic chlorine (Cl), and atomic bromine (Br). While there are natural sources for all of these species, the concentrations of chlorine and bromine have increased markedly in recent years due to the release of large quantities of manmade organohalogen compounds, especially chlorofluorocarbons (CFCs) and bromofluorocarbons.[3] These highly stable compounds are capable of surviving the rise to the stratosphere, where Cl and Br radicals are liberated by the action of ultraviolet light. Each radical is then free to initiate and catalyze a chain reaction capable of breaking down over 100,000 ozone molecules. Ozone levels, over the northern hemisphere, have been dropping by 4% per decade. Over approximately 5% of the Earth's surface, around the north and south poles, much larger (but seasonal) declines have been seen; these are the ozone holes.
the ozone layer is effected to the reasons of the chemicals we use or from the luxury items we use (a .c, computers,etc).these will go to the sky and then chemical reasons the ozone layer is effected
A new observation had come that Cosmic Rays also damage the ozone layer.
THE REASON IS BECAUSE OF GREEN HOUSE EFFECTS AND IT IS CAUSED BY MANY THINGSTHEY R deforestation,carbon monoxide released by vehicles,cfc released by fridge etc
its damaged by freon *Chlorofluorocarbons or CFCs





mainly clorine is the dangerous factor
Vehicle emissions and CFCs.
chlorofluorocarbons and bromofluorocarbons
by carbonmonoxide
green house effect and CFC and other gases
by green house gases


and CFCs
damazing by the man