The Physical Meaning of the Mathematical Formalism Present in Limiting Chemical Equations; Or, How Dilute Is Dilute?

C. Contreras-Ortega , N. Bustamante , J. L. Guevara , C. Portillo and V. Kesternich
Facultad de Ciencias, Universidad Católica del Norte, Casilla 1280, Antofagasta, Chile
J. Chem. Educ., 2007, 84 (5), p 788
DOI: 10.1021/ed084p788
Publication Date (Web): May 1, 2007
History, Education, and Documentation

Abstract

General mathematical formulations are proposed to offer students a better understanding of the real scope of scientific expressions dealing with limiting physical conditions, which are widely used in the chemistry literature. On the basis of these formulations, the most common cases—those concerning dilutes and concentrate solutions, and low and high temperatures and pressures—are analyzed. From the analysis of some particular systems, scales for qualitative values of some particular variables and for acceptability degrees of corresponding results are proposed to assess the adequacy of an equation to reproduce real results.

Keywords (Audience):

First-Year Undergraduate / General

Keywords (Domain):

Analytical Chemistry

Keywords (Pedagogy):

Misconceptions / Discrepant Events

Keywords (Subject):

Aqueous Solution Chemistry
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  • Received: August 03, 2009

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