A Simple Method for Determining the Temperature Coefficient of Voltaic Cell Voltage

Keith M. Davies
George Mason University, Fairfax, VA 22030
Alfred E. Saieed
James Madison High School, Vienna, VA 22180
J. Chem. Educ., 1996, 73 (10), p 959
DOI: 10.1021/ed073p959
Publication Date (Web): October 1, 1996

Abstract

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.

Keywords (Audience):

High School / Introductory Chemistry

Keywords (Domain):

Inorganic Chemistry

Keywords (Feature):

Filtrates and Residues

Keywords (Pedagogy):

Hands-On Learning / Manipulatives

Keywords (Subject):

Electrochemistry
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  • Received: August 03, 2009

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