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The destruction of the ozone layer by chlorofluorocarbons can be described by the following reactions, all occurring in the gas phase.
ClO + O3 Cl + 2O2
H°rxn = -29.90 kJ
2O3 3O2
H°rxn =
Cl + O3 ClO + O2
H°rxn = 54.08 kJ
What is H°rxn for the decomposition of ozone to oxygen?
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