Abstract
Thermal analysis has been integrated into our physical chemistry laboratory course in order to allow students to systematically explore the role of composition in determining the physical properties of a binary mixture. The β-naphthol/acetamide system is presented as an interesting starting point for such a project, as it displays a temperature/composition phase diagram which deviates slightly from the simple two-component eutectic picture. Students compare their measured pure-component melting temperatures with literature values, rationalize the observed trends with mixing using freezing-point-depression arguments, and make a literature search of the unique morphological solid phase obseved in analogous studies. This hands-on project is designed to be accompanied by a classroom discussion of multicomponent phase equilibria.
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KIM, A., MUSFELDT, J.L. Thermodynamics of the β-Naphthol/Acetamide Phase Diagram by Thermal Analysis Techniques. Chem. Educator 2, 1–10 (1997). https://doi.org/10.1007/s00897970129a
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DOI: https://doi.org/10.1007/s00897970129a