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ERIC Number: EJ820887
Record Type: Journal
Publication Date: 2007-Mar
Pages: 4
Abstractor: As Provided
Reference Count: 14
ISSN: ISSN-0021-9584
Discovering the Thermodynamics of Simultaneous Equilibria: An Entropy Analysis Activity Involving Consecutive Equilibria
Bindel, Thomas H.
Journal of Chemical Education, v84 n3 p449-452 Mar 2007
An activity is presented in which the thermodynamics of simultaneous, consecutive equilibria are explored. The activity is appropriate for second-year high school or AP chemistry. Students discover that a reactant-favored (entropy-diminishing or endergonic) reaction can be caused to happen if it is coupled with a product-favored reaction of sufficient entropy production or exergonicity. A variety of six product-favoring reactions are individually coupled with the reactant-favored reaction. The experimental results are correlated with the change in the entropies of the universe ([Delta]S[subscript univ]), the change in the standard-state free energies ([Delta][subscript r]G[degree]), and the various equilibrium constants (K). (Contains 3 tables and 4 notes.)
Division of Chemical Education of the American Chemical Society. Subscription Department, P.O. Box 1267, Bellmawr, NJ 08099-1267. Tel: 800-691-9846; Tel: 856-931-5825; Fax: 856-931-4115; e-mail:; Web site:
Publication Type: Journal Articles; Reports - Descriptive
Education Level: High Schools
Audience: N/A
Language: English
Sponsor: N/A
Authoring Institution: N/A