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  Home > JCE Print > Journal of Chemical Education > Issues > 2007  > February  >
In the Laboratory
Thermochemical Analysis of Neutralization Reactions: An Introductory Discovery Experiment
Kenneth V. Mills and Louise W. Guilmette
Department of Chemistry, College of the Holy Cross, Worcester, MA 01610
Cover
February 2007
Vol. 84 No. 2
p. 326
Abstract
A guided-inquiry laboratory pedagogy called Discovery Chemistry, in which students discover chemical concepts in the lab and the instructor uses their pooled data to guide the lecture portion of the course, was developed by this chemistry department. A Discovery Chemistry experiment that reinforces the students' understanding of stoichiometry and allows them to discover neutralization reactions and thermochemistry is described. This experiment examines the neutralization of citric acid, lactic acid, and oxalic acid by sodium hydroxide. The comparison of the three acids facilitates the pooling of data and the ability to include testable hypotheses in pre- and post-laboratory discussions, key components of the Discovery process.
Supplement
Instructions for the students including a data sheet, notes for the instructor, teaching assistant guidelines, and followup exercise are available.
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Contents
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JCE2007p0326W.zip
Sup_2005-0734.doc (Microsoft Word)
More Information
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Citation
Mills, Kenneth V.; Guilmette, Louise W. J. Chem. Educ. 2007 84 326.
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Keywords
Acid–Base Chemistry; First-Year Undergraduate / General; Stoichiometry
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History
Created:
Last Updated:
1/9/2007
1/18/2007
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