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  Home > JCE Print > Journal of Chemical Education > Issues > 2007  > May  >
In the Classroom
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
Cover
May 2007
Vol. 84 No. 5
p. 788
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.
More Information
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Citation
Contreras-Ortega, C.; Bustamante, N.; Guevara, J. L.; Portillo, C.; Kesternich, V. J. Chem. Educ. 2007, 84, 788.
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Keywords
Analytical Chemistry; Aqueous Solution Chemistry; Equilibrium; First-Year Undergraduate / General; Gases; General Public; Mathematics / Symbolic Mathematics; Misconceptions / Discrepant Events; Physical Chemistry; Problem Solving / Decision Making; Public Understanding / Outreach; Quantitative Analysis; Solutions / Solvents; Textbooks / Reference Books; Upper-Division Undergraduate
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History
Created:
Last Updated:
3/22/2007
3/27/2007
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