Problem 3
In general terms, what is meant by photochemical smog? What are the initial reactants in the process? Why is sunlight required?
Problem 4
What is meant by a primary pollutant and by a secondary pollutant? Give examples.
Problem 6
What is meant by the term synergism? Give an example.
Problem 8
Describe the strategies by which reduction of urban ozone levels has been attempted. What difficulties have been encountered in these efforts? Is photochemical smog strictly a localized urban problem?
Problem 10
Describe the operation of the three-uay catalyst in transforming emissions released by an automobile engine. Does the catalyst operate when the engine is cold? Why is it important for converters that the level of sulfur in gasoline be minimized?
Problem 13
What are the main anthropogenic sources of sulfur dioxide? Describe the strategies by which these emissions can be reduced. What is the Claus reaction?
Problem 16
What two species, other than \(\mathrm{O}_{2}\), are active oxidizing agents of sulfur dioxide in atmospheric water droplets?
Problem 17
State Henry's law.
Problem 18
Define the term aerosol, and differentiate between coarse and fine particulates. What are the usual origins of these two types of atmospheric particles?
Problem 19
What are the usual chemical components of a sulfate aerosol?
