Depletion of the Ozone Layer-C6
- Created by: Shannon
- Created on: 27-04-13 20:30
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- Depletion of the Ozone Layer
- Absorbs most of the UV lights- more depletion, more UV in the atmosphere
- CFCs damage the ozone layer- have been replaced by HFCs or alkanes
- 1930's- CFCs are "inert", linked with depletion in 1970's
- Common for CFCs to last 20-50 years in the atmosphere
- HFCs do not contain chlorine, so do not make chlorine radicals-safer
- UV part of the electromagnet-ic spectrum is at the right frequency to make the ozone molecules vibrate
- Convert UV radiation into movement energy
- UV radiation breaks down, CFC molecules to give highly reactive chlorine atoms
- Single Cl- chlorine radical-react with the ozone (depletion) to make oxygen gas
- Chlorine atoms regenerate to react with the ozone more
- A covalent bond can be spilt into two equal haves to make
- Each radical sets off a chain reaction
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