When CFCs are present in the stratosphere they reacted on by ultra violet light to release a chloride ion. The ion breaks down an ozone molecule to create an oxygen molecule and ionic oxygen. The ionic oxygen releases more chloride ions to break down more ozone and CFCs
The end result is the ozone is converted to oxygen quicker than natural processes can replace it
They catalyse the break down of ozone (O3) into normal oxygen (O2)
UV radiation causes one of the carbon-chlorine bonds to break resulting in the formation of two free radicals. The chlorine radical does the damage. It reacts with ozone to from O2 and in a later reaction the chlorine radical is reformed which means that it can go on to break down more ozone.
Cl. + O3 ------> O2 + ClO.
The chlorine is reformed when it reacts with an oxygen radical from the natural decomposition of ozone.
ClO. + O. ------> Cl. + O2
Chlorofluorocarbons (CFCs) that were used in refrigerators and aerosols are the main destroyers of the ozone layer. Chlorine atoms break from them and destroy the ozone.
Scientists hope that the holes will be completely repaired by 2050.
the most affected part of atmosphere is Ozone layer.
CFC's destroy the ozone layer. It is present in the stratosphere.
CfC's are released by humans in the atmosphere. They decompose into chlorine and fluorine molecules which further react with ozone to decompose and deplete it.
Stratosphere has CFC's. They are in ozone layer as pollutants.
The chlorine part causes the depletion. It reacts with the ozone to deplete it.
1. CFCs help in refrigeration but destroy the ozone layer when released into the atmosphere
No, the chlorine and other chemicals in CFCs (chlorofluorocarbons) destroy the ozone molecules and weaken the ozone layer.
CFCs are swirled around the world by the global winds. This can take up to ten years for them to reach the lower stratosphere but when there they are still effective at destroying ozone. CFCs in fact have a lifespan in the atmosphere of between 50 and 75 years.
The ozone layer present in the stratospheric region of the atmosphere is being destroyed by certain chemicals. These chemicals are CFCs.
CFC's and ozone layer combined is a concern. It is the problem because CFC's destroy the ozone to a great content.
They are carried by westerlies. They destroy the ozone.
CFCs (chlorofluorocarbons) destroy the ozone layer allowing harmful radiation to reach the earth.
1. CFCs help in refrigeration but destroy the ozone layer when released into the atmosphere
The ozone layer, which is part of the stratosphere, is the most affected by fluorocarbons. When chlorofluorocarbons or CFCs are released into the atmosphere, they migrate from the troposphere to the stratosphere after about 3 to 5 years. These CFCs destroy the ozone layer.
CFCs (chlorofluorocarbons) destroy ozone in the ozone layer.
No, the chlorine and other chemicals in CFCs (chlorofluorocarbons) destroy the ozone molecules and weaken the ozone layer.
ozone
Yes, CFCs can destroy the ozone layer. They react with ozone present in ozone layer and decompose it.
CFCs are swirled around the world by the global winds. This can take up to ten years for them to reach the lower stratosphere but when there they are still effective at destroying ozone. CFCs in fact have a lifespan in the atmosphere of between 50 and 75 years.
The ozone layer present in the stratospheric region of the atmosphere is being destroyed by certain chemicals. These chemicals are CFCs.
See "What is causing the depletion of the ozone layer?"
CFC's and ozone layer combined is a concern. It is the problem because CFC's destroy the ozone to a great content.