What is the role of CFC gas to our environment ?

Question

Effects of CFC?

Answer 1

CFC result in depletion of the ozone layer .The detailed mechanism by which the polar ozone holes form is different from that for the mid-latitude thinning, but the most important process in both trends is catalytic destruction of ozone by atomic chlorine and bromine.

The main source of these halogen atoms in the stratosphere is photodissociation of chlorofluorocarbon (CFC) compounds, commonly called freons, and of bromofluorocarbon compounds known as halons. These compounds are transported into the stratosphere after being emitted at the surface. Both ozone depletion mechanisms strengthened as emissions of CFCs and halons increased.

CFCs, halons and other contributory substances are commonly referred to as ozone-depleting substances (ODS). Since the ozone layer prevents most harmful UVB wavelengths (270–315 nm) of ultraviolet light (UV light) from passing through the Earth's atmosphere, observed and projected decreases in ozone have generated worldwide concern leading to adoption of the Montreal Protocol banning the production of CFCs and halons as well as related ozone depleting chemicals such as carbon tetrachloride and trichloroethane (also known as methyl chloroform). It is suspected that a variety of biological consequences such as increases in skin cancer, damage to plants, and reduction of plankton populations in the ocean's photic zone may result from the increased UV exposure due to ozone depletion.

Answer 2

CFC's haven't been used as propellants in aerosol cans in the US since ~1975.

CFC's primary use is air conditioning (both car and residential). Car A/C is now HCFC's which are supposedly safer.

When CFCs (chloro-fluoro-carbons) are released into the air they travel up into the upper atmosphere where they are acted upon by UV light. This causes them to form free-radical chlorine atoms which decompose ozone and then reform the radical. This means that each CFC can destroy many hundreds or thousands or more atoms of UV light protecting ozone.

Answer 3

CFCs (Chlorofluorocarbons) lead to depletion of the ozone layer. They are very stable compounds and don't decompose easily. CFCs are mostly used in refrigerators and aerosols.They move upwards in the atmosphere and reach the Ozone layer. One CFC molecule can degrade degrade many ozone molecules. After their harmful effects were discovered, their use has been considerably reduced.

Answer 4

It leads to green house effect.It leads to ozone layer depletion. Cfc is commonly reffered to as ozone depleting substance.The detailed mechanism by which the polar ozone holes form is different from that for the mid-latitude thinning, but the most important process in both trends is catalytic destruction of ozone by atomic chlorine and bromine.[1] The main source of these halogen atom in the stratosphere is of chloroflurocarbons.CFCs, halons and other contributory substances are commonly referred to as ozone-depleting substances (ODS). Since the ozone layer prevents most harmful UVB wavelengths (270–315 nm) of ultraviolet light (UV light) from passing through the Earth's atmosphere, observed and projected decreases in ozone have generated worldwide concern leading to adoption of the Montreal Protocol banning the production of CFCs and halons as well as related ozone depleting chemicals such as carbon tetrachloride and trichloroethane (also known as methyl chloroform). It is suspected that a variety of biological consequences such as increases in skin cancer, damage to plants, and reduction of plankton populations in the ocean's photic zone may result from the increased UV exposure due to ozone depletion.

Answer 5

Deplete the ozone layer

Answer 6

they are propellants ( like in aerosols) and they deplete the ozone layer