One of the concerns about the use of Freons is that they will migrate to the upper atmosphere, where chlorine atoms can be generated by the following reaction:
Chlorine atoms can act as a catalyst for the destruction of ozone. The activation energy for the reaction
is 2.1 kJ/mol. Which is the more effective catalyst for the destruction of ozone, Cl or NO?
Ea for the uncatalyzed reaction O3 (g) + O(g) → 2O2 (g) is 14.0 kJ. Ea for the same reaction when catalyzed is 11.9 kJ.