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Chemistry, 7/e
Raymond Chang, Williams College
Chemical Kinetics

Internet Exercises

Spectrum database
(http://www.speclab.com/compound/chemabc.htm)

  1. 2,4-D is an abbreviation for a commonly used weed killer. Use the information in the Spectrum database at http://www.speclab.com/compound/chemabc.htm and the find function of your browser to find information on 2,4-D.
    1. Examine the enviro nmental impact information and determine what happens to 2,4-D after it has been sprayed on the soil.
    2. Compare the half-life of 2,4-D in soil with the half-life in water. What is the product of the degradation of 2,4-D in water?
    3. If the half-life of 2,4-D in a particular soil is 5 days, what percent of the 2,4-D originally present will be present after one month?
    4. Use ChemFinder at http://chemfinder.camsoft.com/ to determine the structure of 2,4-D. Does the degradation product of 2,4-D in water make sense now that you know the structure of 2,4-D?
chemical rate kinetics
(http://edie.cprost.sfu.ca/~rhlogan/kinetics.html)

  1. Some chemistry instructors at high schools and universities create educational homepages for students, not necessarily their own. R.H. Logan of North Lake College has a site dedicated to reinforcing various general chemistry topics. Check out what he has on chemical rate kinetics at http://edie.cprost.sfu.ca/~rhlogan/kinetics.html.
    1. How does temperature affect the rate of a reaction?
    2. Look at the diagram given in the catalysis section. How does a catalyst affect a reaction?
    3. True or False: The change in free energy of an uncatalyzed reaction is greater than that of a catalyzed one.
    4. What does concentration have to do with the collisional theory of reaction rates?
    5. If the overall order of a reaction is 2, does this mean that the reaction is bimolecular?
University of Akron
(http://ull.chemistry.uakron.edu/genobc/)

  1. The University of Akron provides help in three subdisciplines of chemistry: general, organic, and biochemistry. Go to http://ull.chemistry.uakron.edu/genobc/, and click on the course animations list. Then download number 48, heterogeneous catalysis.
    1. What does binding to the surface of the catalyst do to the gaseous molecules?
    2. How does heterogeneous catalysis differ from a homogeneous one?








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