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The depletion of the ozone layer in the upper atmosphere reduces the Earth's natural protection from harmful ultraviolet radiation - CIE - A-Level Chemistry - Question 27 - 2012 - Paper 1
Question 27
The depletion of the ozone layer in the upper atmosphere reduces the Earth's natural protection from harmful ultraviolet radiation. Which compound would cause the m... show full transcript
Worked Solution & Example Answer:The depletion of the ozone layer in the upper atmosphere reduces the Earth's natural protection from harmful ultraviolet radiation - CIE - A-Level Chemistry - Question 27 - 2012 - Paper 1
Step 1
Which compound would cause the most depletion of the ozone layer?
Answer
To determine which compound causes the most depletion of the ozone layer, we must consider the potential for ozone-depleting substances (ODS) to release chlorine or bromine atoms in the atmosphere.
- CClF: This compound can release chlorine atoms, which are very effective at destroying ozone molecules.
- CF: This compound is relatively inert and does not contribute significantly to ozone depletion.
- CHClF: This compound can release chlorine and is also known for its ability to deplete ozone.
- CHF: This compound has a lower potential for ozone depletion as it does not contain chlorine or bromine.
Based on this analysis, compound A) CClF would cause the most depletion of the ozone layer due to its ability to release chlorine atoms.