Environmentalhard · Past Paper
Which of the following reactions occurs when ozone is broken down by chlorine?
ACl + O3 -> ClO + O2
BCl + O2 -> ClO + O
CClO + O2 -> Cl + O3
DO3 + UV -> O2 + O
✓ Correct Answer: A — Cl + O3 -> ClO + O2
A chlorine atom reacts with ozone to form chlorine monoxide and a molecule of oxygen, depleting the ozone layer.
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