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A Generalized Pre-Equilibrium Approximation in Chemical and Photophysical Kinetics

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Margaret Rae and Mário N. Berberan-Santos

Centro de Química-Física Molecular, Instituto Superior Técnico, 1049-001 Lisboa, Portugal

J. Chem. Educ., 2004, 81 (3), p 436

DOI: 10.1021/ed081p436

Publication Date (Web): March 1, 2004

Section:

History, Education, and Documentation

Abstract

For most mechanisms of chemical reactions and molecular photophysical processes the time evolution of the concentration of the intervening species cannot be obtained explicitly. The pre-equilibrium approximation is one of several useful approximation methods that allow one to go from complex systems of differential equations (the kinetic rate equations) to simple explicit solutions. In this article, a relatively general view of the pre-equilibrium approximation is presented, along with the respective solution. Several applications are also discussed.

Keywords (Audience):

Upper-Division Undergraduate

Keywords (Domain):

Physical Chemistry

Keywords (Feature):

Research: Science and Education

Keywords (Subject):

Enzymes

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This article has been cited by 2 ACS Journal articles (2 most recent appear below).

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Journal of the American Chemical Society2011 Article ASAP
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  Ortholithiation of 1-chloro-3-(trifluoromethyl)benzene with lithium diisopropylamide (LDA) in tetrahydrofuran at −78 °C displays characteristics of reactions in which aggregation events are rate limiting. Metalation with lithium-chloride-free LDA involves ...
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  Nelsen’s four-point method of separating oxidants and reductants has been tested to evaluate its applicability to proton-coupled electron-transfer reactions. An efficient computational method was developed to determine rate-limiting steps in complex, ...
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