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  Home > JCE Print > Journal of Chemical Education > Issues > 1998  > September  >
In the Laboratory
A Student Experiment in Non-Isothermal Chemical Kinetics
Steven C. Hodgson, Lawrence N. Ngeh, John D. Orbell, and Stephen W. Bigger
School of Life Sciences and Technology, Victoria University of Technology, St. Albans Campus, MCMC, Melbourne, 8001, Australia
Cover
September 1998
Vol. 75 No. 9
p. 1150
Abstract
An advanced level experiment in physical chemistry is described in which the kinetics of the reaction between aqueous bromine and formic acid are studied spectrophotometrically under non-isothermal, pseudo-first order conditions. A dynamic temperature profile is achieved conveniently by heating the reactants prior to mixing and allowing the reaction mixture to cool in accordance with Newton's law of cooling. The equations describing the time- dependence of the rate constant obtained under the imposed temperature profile are derived and a method is described for processing the experimentally obtained data. The activation energy of the reaction is determined from a plot of the processed data.
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*  Citation
 Hodgson, Steven C.; Ngeh, Lawrence N.; Orbell, John D.; Bigger, Stephen W. J. Chem. Educ. 1998 75 1150.
*  Keywords
 bromine, thermodynamics, kinetics
*  History
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Last Updated:		 June 21, 1999
November 22, 2005
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