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OCR A-Level Chemistry Ozone Layer Summary- Free Radical Subsitution £2.99   Add to cart

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OCR A-Level Chemistry Ozone Layer Summary- Free Radical Subsitution

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Document summarising how the ozone layer is broken down, following the OCR A-Level Chemistry specification. Includes mechanisms of CFCs and NO radicals breaking down the ozone by free radical substitution clearly.

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  • May 18, 2024
  • 2
  • 2023/2024
  • Summary
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akalyashanmuganantham
Ozone layer


-UV light breaks oxygen molecules into oxygen radicals

- Chlorofluorocarbons (CFCs) are common compounds found in aerosol
propellants. When entering the stratosphere, they break down the ozone
layer.

Initiation:


Conditions: UV light
Type of fission: homolytic (when both bonding atoms receive one electron each from
the bonded atoms).
C-Cl breaks first as it has the lowest bond enthalpy, so less energy is needed to
overcome the bond.

Propagation:




Termination:




Overall equation:

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