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  Home > JCE Print > Journal of Chemical Education > Issues > 1998  > December  >
In the Laboratory
The Spontaneous Hydrolysis of Methyl Chloroformate: A Physical Chemistry Experiment for Teaching Techniques in Chemical Kinetics
Omar A. El Seoud and Keiko Takashima
Universidade de São Paulo, Instituto de Química, Av. Prof. Lineu Prestes, 748, Caixa Postal 26077, São Paulo 05599-970, BRAZIL
Cover
December 1998
Vol. 75 No. 12
p. 1625
Abstract
As an experiment for the undergraduate physical chemistry laboratory, the spontaneous hydrolysis of methyl chloroformate has the following attractive features: the reagent is inexpensive, and its stock solution in acetonitrile can be safely handled; the experiment requires very little preparation and can be carried out in a single 4-hour laboratory period; data acquisition can be performed either manually or with a microcomputer. The concentration of one of the reaction products, HCl, is determined either directly by pH measurement or indirectly by conductance measurement or by following the decrease in absorbance of the basic form of the indicator bromophenol blue. The present experiment is used to exemplify the scope and variety of techniques that can be employed for rate measurements and to demonstrate important features of first-order kinetics. These subjects are usually addressed in the specialized literature.
More Information
*  Citation
 El Seoud, Omar A.; Takashima, Keiko. J. Chem. Educ. 1998 75 1625.
*  Keywords
 Kinetics; Laboratory Instruction; Instrumental Methods; Physical Chemistry; Solutions / Solvents
*  History
 Created:
Last Updated:		 June 18, 1999
June 24, 2005
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