Final answer:
The 1995 Nobel Prize in Chemistry highlighted the role of chlorine atoms from CFCs in depleting the stratospheric ozone layer. Although specific enthalpy values are required to solve the reaction enthalpy, this response explains the connection between CFCs, chlorine atoms, and ozone depletion as well as the general method to find the reaction enthalpy.
Step-by-step explanation:
The 1995 Nobel Prize in Chemistry was awarded to Paul Crutzen, F. Sherwood Rowland, and Mario Molina for their groundbreaking work in atmospheric chemistry related to the formation and decomposition of ozone. Specifically, Molina and Rowland discovered the harmful effects of chlorofluorocarbons (CFCs) on the stratospheric ozone layer. In their study, they found that when CFCs reach the stratosphere, they are broken down by ultraviolet (UV) light, releasing chlorine atoms which then catalyze the destruction of ozone (O3) molecules. This catalytic cycle results in the depletion of ozone, which serves as a protective layer against harmful solar UV radiation.
The enthalpy of reaction for the reaction of chlorine with ozone was not directly given, but understanding that it involves the breakdown of ozone into oxygen gas, we could use data from other reactions as well as Hess's Law to deduce this value. Though the question asked for specific enthalpy reaction figures which are not provided in the text, in principle, by having the enthalpy of related reactions, it would be feasible to apply thermochemical equations to calculate the desired enthalpy change.