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13 Jun 2006, 9:50 PM
| #1 (permalink) |
| Assistant Member HSC: 2006 Gender: Female Location: In my own little bubble!
Join Date: Mar 2006
Posts: 75
Last Activity:
6 Sep 2007, 1:04 PM  | Help pleazZZ!! You can hide this advertisement by registering. hEY evrione. Can some tell me the chemical compostion of CFCs and linking it to ozone depletion and also the effect of greenhouse gases on global warming?( can u explain the process of greenhouse gases and UV radiation pleaz? Thank you. Im so lost. |
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14 Jun 2006, 5:28 PM
| #2 (permalink) |
| Forza Ferrari!  HSC: 2003 Gender: Female Location: Not here!
Join Date: May 2003
Posts: 7,006
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7 Apr 2009, 5:04 PM   | Re: Help pleazZZ!! O2 + -> UVLight -> O + O (Oxygen 2+ UV -> UV light -> Oxygen + Oxygen) O + O2 -> O3 (Oxygen + Oxygen 2 -> Ozone) = (process is called photolysis) 03 + UV -> O2 + O (Ozone + UV -> Oxygen + Oxygen 2). - High energy ultraviolet radiation strikes on oxygen molecule and causes it to split into two free oxygen atoms. - The free oxygen atoms collide with molecules of oxygen to form ozone. The champan process of ozone destruction: - Ozone absorbs a range of ultraviolet radiation splitting the molecule into one free oxygen atom and one molecule ordinary oxygen. - The free oxygen atom then can collide with an ozone molecule to form two molecules of oxygen. About the greenhouse effect, its simply. Ozone takes all the remaining oxygen molecules / atoms in the atmosphere. Because of this, more UV light reaches the Earth's surface and heats up the planet. (I think thats what you meant. Feel free to correct me on the ozone thingo, cause I hate chemistry, and ozone was always the worst topic for me  ) |
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14 Jun 2006, 8:49 PM
| #3 (permalink) | |
| no soup for you  HSC: 2006 Gender: Male Location: Penrith
Join Date: Jul 2005
Posts: 272
Last Activity:
17 Dec 2008, 3:42 PM | Re: Help pleazZZ!! Quote:
eg. CCl3F --> CCl2F + Cl this chlorine reacts with ozone in the ozone layer, breaking it down and forming chlorine oxide, which then seperates to form oxygen and chlorine again, so more ozone can be broken down. eg. Cl + O3 --> ClO + O2 and then ClO + O --> Cl + O2 if theres less ozone, then more uv radiation reaches the earths surface, which should raise the earths surface temperature. so since the cfcs have destroyed some of the ozone that blocks the radiation, they could be thought of as causing an increase in temperature. did that cover it all? oh and were greenhouse gases meant to be tied into that, or was that a seperate point? Last edited by (enigma); 14 Jun 2006 at 8:59 PM. Reason: needed more info | |
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15 Jun 2006, 4:36 PM
| #4 (permalink) |
| Assistant Member HSC: 2006 Gender: Female Location: In my own little bubble!
Join Date: Mar 2006
Posts: 75
Last Activity:
6 Sep 2007, 1:04 PM |  Re: Help pleazZZ!! Fanx guys.Wait. Umn for enigma question. I fink they are separate dot points but in sub-sections. Thank you very much. I understand now. |
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