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CFC's and the Ozone Layer for Chemistry Students

What is ozone and how it works as a protective molecule for our environment?

What are the effects of CFCs on the ozone layer?

What other alternatives you can think of to diminish environmental impact of CFCs?

Draw the electron dot structure of ozone, and explain its molecular shape and properties. Is ozone a covalent molecule?

Is it polar or non polar? Why? How reactive is ozone? Can you comment or show reactions of ozone with pollutants or chemicals in the atmosphere?

Solution Preview

What is ozone and how it works as a protective molecule for our environment?

Ozone is a molecule consisting of three oxygen atoms. It's formula is therefore O3 and it can be called trioxygen, although this name is less commonly used. It is an important protective molecule for our environment because it prevents ultraviolet (UV) light from traveling to the surface of the Earth. The simple image below outlines the importance of the ozone layer.

Image taken from http://www.weatherwizkids.com/ozone.gif

What are the effects of CFCs on the ozone layer?

Chlorofluorocarbons (CFCs) cause depletion of the ozone layer. The chlorine component of CFCs can be converted into a free radical in the atmosphere. Free radicals are highly reactive chemical species, and the chlorine free radicals have a tendency of breaking the bonds between oxygen atoms in ozone molecules. This results in less ozone in ...

Solution Summary

This solution contains over 600 words and includes diagrams. Specific questions relating to the ozone layer are addressed, including the effects of CFC's and the structure and properties of ozone.

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