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  Home > JCE Print > Journal of Chemical Education > Issues > 1999  > November  >
Research: Science and Education
A New Look at Reaction Rates
Tomislav Cvitas
Physical Chemistry Laboratory, University of Zagreb, POB 163, HR-10001 Zagreb, Croatia
Cover
November 1999
Vol. 76 No. 11
p. 1574
Abstract
Both rates of radioactive decays and rates of chemical reactions can be thought of as numbers of transformations per time. The rate of reaction, as an intensive quantity characteristic of the process, is obtained by dividing the amount of chemical transformations per time by the volume of the reaction system. The practical definition of the reaction rate found in the literature can then be derived by defining the stoichiometric numbers as changes in the number of specific molecules taking part in the reaction per chemical transformation. The name concentration of chemical transformations is introduced for what was previously called reaction variable. It is suggested that the conceptual definition of the advancement of reaction and reaction rate be introduced in general chemistry courses.
More Information
*  Citation
 Cvitas, Tomislav. J. Chem. Educ. 1999 76 1574.
*  Keywords
 General Chemistry; Physical Chemistry; Kinetics; Stoichiometry; Nomenclature / Units / Symbols; Textbooks
*  History
 Created:
Last Updated:		 October 12, 1999
June 23, 2005
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