Micelles in the Physical Chemistry Laboratory. Kinetics of Hydrolysis of 5,5'-Dithiobis-(2-nitrobenzoate) in Basic Solution

• Kathryn R. Williams ^[1]
  1. [1] University of Florida

     University of Florida

     Estados Unidos

     
• Localización: Journal of chemical education, ISSN 0021-9584, Vol. 77, Nº 5 (May), 2000, págs. 626-626
• Idioma: inglés
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• Resumen

  • This paper describes the second in a series of laboratory experiments demonstrating the effects of micelles on physicochemical properties. The kinetics of the hydrolysis of 5,5'-dithiobis-(2-nitrobenzoate) (DTNB2-) in basic solution are studied by UV spectrophotometry. The reaction is conducted both without and with added cetyltrimethylammonium bromide (C16TAB) to observe the rate enhancement in the presence of micelles. With the conditions specified in the experiment, total reaction times are in the range of 15 seconds to 15 minutes, thus allowing several data sets to be acquired in a single laboratory period.