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What are the disadvantages of CFCs? I have searched everywhere for this and i need a lot of information because I'm doing a very big science project. Thanks :)

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CFCs is chloroflourocarbons. 
When CFCs are released into the air they can get to the stratosphere and destroy ozone layer. This creates a hole in the ozone layer around the earth and allow in more ultraviolet radiation from the sun.

CCl2F2 + hv → CClF2 + Cl•

Cl• + O3 → ClO• + O2

ClO• + O• → Cl• + O2

ClO• + ClO• + M → (ClO)2 + M

(ClO)2 + hv → Cl• + ClOO

ClOO + M → Cl• + O2 + M

Thus the free radicle chain reaction continues which leads to the breaking of the Ozone layer.

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The full name for CFCs is chloroflouroc arbons, which just means that these synthetic compounds include...

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charles85 | Student

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Since the appearance of an ozone hole (because of large quantity of CFCs) over the Antarctic in the early 1980s, Americans have become aware of the health threats posed by ozone depletion, which decreases our atmosphere's natural protection from the sun's harmful ultra-violet (UV) rays. One of the disease is skin cancer affected by depleting ozone layer due to CFCs.

ronald75 | Student

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Chlorocarbons, CFCl3 (CFC-11) and CF2Cl2 (CFC-12) because of their larger concentrations and potentially significant effects on stratospheric ozone. CFC-11 and CFC-12 have the highest concentrations of the man-made chlorocarbons, around 0.27 and 0.55 ppbv, respectively (measured at Mauna Loa in 1997, Fig. 5 & 6). As indicated in their GWP values, these two gases are strong infrared absorbers. It is thought that CFC-11 and CFC-12 have contributed about one-third of the radiative forcing of gases other than CO2 during the 1980s.