Question

CFC's have been implicated in ozone depletion. Show that when Freon 12 (CCl2F2) is exposed to ultraviolet radiation, the compound decomposes to produce chlorine by calculating the wavelength (in m) that breaks the Cl-C bond.

DATA: average bond energy (kJ/mol)

Single bonds: F-F=155, Cl-Cl=242, C-C=347

Multiple Bonds: C=C=610