1
Question
Chlorofluorocarbon releases a chemical harmful to ozone
Chlorofluorocarbon releases a chemical harmful to ozone
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Solution
The correct option is D Chlorine
Mechanism of ozone depletion by CFC
The chlorofluorocarbons (CF2Cl2) release a chlorine radical that acts as a catalyst in converting ozone to molecular oxygen and chlorine monoxide radical (ClO). This results in ozone depletion.
CF2Cl2 → •CF2Cl + Cl•
Cl• + O3 → ClO• + O2
ClO• further reacts with atomic oxygen and breaks down to release chlorine atoms which act on another ozone molecule, thus repeating the process.
ClO• + O → Cl• + O2
Final answer
(b) Chlorine
Mechanism of ozone depletion by CFC
The chlorofluorocarbons (CF2Cl2) release a chlorine radical that acts as a catalyst in converting ozone to molecular oxygen and chlorine monoxide radical (ClO). This results in ozone depletion.
CF2Cl2 → •CF2Cl + Cl•
Cl• + O3 → ClO• + O2ClO• further reacts with atomic oxygen and breaks down to release chlorine atoms which act on another ozone molecule, thus repeating the process.
ClO• + O → Cl• + O2
Final answer
(b) Chlorine
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