TCE     
|
The Chemical Educator
ISSN: 1430-4171 (electronic version)
Abstract Volume 7
Issue 6(2002) pp 364-365
A Chemiluminescent Clock Reaction: A Dramatic Illustration of Competing Reaction Kinetics
Miguel O. Mitchell
Department of Chemistry, Henson School of Science and Technology, Salisbury
University, Salisbury, MD 21801, USA, momitchell@salisbury.edu
Received June 24, 2002. Accepted October 17, 2002
Published online: 24 October 2002
Abstract. In the presence
of both rubrene and perylene dissolved in hexanes, oxalyl chloride and
hydrogen peroxide react to generate three different colors of light
in the order yellow, then white, and finally blue. Student observers
with additional TLC data can develop a simple kinetics model involving
competing fluorescer decomposition and emission events.
Key Words: Laboratories and Demonstrations; analytical chemistry; chromatography
(*) Corresponding author. (E-mail: momitchell@salisbury.edu)
Article in PDF format (133 KB) HTML format
Issue date: December
1, 2002
© The Chemical Educator 1996-2024