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  Home > JCE Print > Journal of Chemical Education > Issues > 2004  > October  >
Chemical Education Today
Letters
An Alternative Thermochemical Container
Dean J. Campbell
Department of Chemistry and Biochemistry, Bradley University, Peoria, IL 61625
Cover
October 2004
Vol. 81 No. 10
p. 1421
Full Text
I was intrigued with the JCE Classroom Activity: #59 "Some Like It Hot, Some Like It Cold" (1). I think that a polystyrene foam egg carton (or even multiple nested cartons) would be an adequate container for mixing the solutions and performing thermochemical measurements. These cartons are readily available and would not require potentially dangerous preparation methods such as knives and heat guns, as suggested in the Activity. Most of the cups in the typical egg carton shown in the picture have a capacity of 15 mL (the end cups have a capacity of 10 mL). The quantities of reagent used in the Activity could simply be scaled up by factors of five to ten. A polystyrene foam form used to ship test tubes (such as the one shown in Figure 1) has wells with capacities of 2–3 mL. This would likely be an acceptable holder for mixing thermochemical reagents as well.


Figure 1. A typical polystyrene foam egg carton and a polystyrene foam form for shipping test tubes.

Literature Cited

  1. Silberman, R. G. J. Chem. Educ. 2004, 81, 64A–64B.

See the author's reply.
More Information
*  Citation
 Campbell, Dean J. J. Chem. Educ. 2004 81 1421.
*  Keywords
 Laboratory Equipment / Apparatus; Teaching / Learning Aids
*  History
 Created:
Last Updated:		 August 31, 2004
September 10, 2004
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