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  Home > JCE Print > Journal of Chemical Education > Issues > 2007  > December  >
In the Laboratory
The Glyoxal Clock Reaction
Julie B. Ealy, Alexandra Rodriguez Negron, Jessica Stephens, and Rebecca Stauffer
Department of Chemistry, Pennsylvania State University, Lehigh Valley Campus, Fogelsville, PA 18051

Stanley D. Furrow
Department of Chemistry, Pennsylvania State University, Reading, PA 19610

Cover
December 2007
Vol. 84 No. 12
p. 1965
Abstract
Research on the glyoxal clock reaction has led to adaptation of the clock reaction to a general chemistry experiment. This particular reaction is just one of many that used formaldehyde in the past. The kinetics of the glyoxal clock makes the reaction suitable as a general chemistry lab using a Calculator Based Laboratory (CBL) or a LabPro. The apparent order of the reacting species has been determined: first order in glyoxal and zero order in bisulfite.
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  JCE2007p1965W.pdf
 
JCE2007p1965W.zip
Folder JCE2007p1965W containing JCE2007p1965W_1.doc and JCE2007p1965W_2.doc (Microsoft Word).
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Citation
Ealy, Julie B.; Negron, Alexandra Rodriguez; Stephens, Jessica; Stauffer, Rebecca; Furrow, Stanley D. J. Chem. Educ. 2007, 84, 1965.
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Keywords
Aldehydes / Ketones; Analytical Chemistry; Dyes / Pigments; First-Year Undergraduate / General; Hands-On Learning / Manipulatives; Kinetics; Laboratory Instruction; Lewis Acids / Bases; Mechanisms of Reactions; Rate Law; Reactions
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History
Created:
Last Updated:
10/25/2007
10/31/2007
 Caution! 
Experiments, laboratory exercises, lecture demonstrations, and other descriptions of the use of chemicals, apparatus, instruments, computers, and computer interfaces are presented in the Journal of Chemical Education as illustrative of new or improved ideas or concepts in chemistry instruction and are directed at qualified teachers. Although every effort is made to assure and encourage safe practices and safe use of chemicals, the Journal of Chemical Education cannot assume responsibility for uses made of its published materials. Many chemicals are hazardous. Precautions for the safe use of hazardous chemicals and directions for their proper disposal are described in the Material Safety Data Sheets and on the labels. We strongly urge all those planning to use materials from our pages to make choices and to develop procedures for laboratory and classroom safety in accordance with local needs and situations.
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