F332 - Module 2(A) The Atmosphere

Organic reactions

Explain the chemical basis of the depletion of ozone in the stratosphere due to halogenoalkanes, in simple terms involving the formation of halogen atoms and the catalytic role of these atoms (and other radicals) in ozone destruction; explain the ease of photodissociation of the halogenoalkanes (fluoroalkanes to iodoalkanes) in terms of bond enthalpy;

Discuss and evaluate the evidence that was gathered to support understanding of how ozone depletion in the stratosphere due to halogenoalkanes occurs and how the scientific community validated the results of this and other experiments (given information)