A Simple Method for Determining the Temperature Coefficient of Voltaic Cell Voltage
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Keith M. Davies [1] ; Alfred E. Saieed [2]
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[1] George Mason University
George Mason University
Estados Unidos
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[2] James Madison High School, Vienna
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- Localización: Journal of chemical education, ISSN 0021-9584, Vol. 73, Nº 10 (October), 1996, págs. 959-962
- Idioma: inglés
- Texto completo no disponible (Saber más ...)
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Resumen
Although use of the Nernst equation to illustrate the dependence of cell potential on half-cell concentrations is routinely covered in first-year college chemistry and high school AP chemistry classes, the temperature dependence of cell voltages is rarely encountered outside of the undergraduate physical chemistry laboratory. Even there, its coverage is somewhat limited because of the cost and sophistication of the instrumentation required. This article describes a relatively simple method for preparing voltaic cells, and through their temperature coefficient, _Eo/_T, it explores relationships between DeltaGo, DeltaHo and DeltaSo for the cell reactions involved.
