Environmentalhard · Past Paper
Which chemical reaction represents the formation of ozone in the stratosphere?
AO2 + UV -> O + O; O + O2 -> O3
BCO2 + H2O -> H2CO3
CN2 + O2 -> 2NO
DCH4 + 2O2 -> CO2 + 2H2O
✓ Correct Answer: A — O2 + UV -> O + O; O + O2 -> O3
Stratospheric ozone is formed when UV light breaks molecular oxygen into atoms, which then combine with other O2 molecules.
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