Experiments to Introduce Students into the Temperature Dependence of the Reaction Rate

Marcel Emmert¹, Konrad Heß¹, Patrick Gräb^1, and Ekkehard Geidel¹

¹Didactics of Chemistry, Julius-Maximilians-University Würzburg, 97074 Würzburg, Germany

Cite this paper:
Marcel Emmert, Konrad Heß, Patrick Gräb and Ekkehard Geidel. Experiments to Introduce Students into the Temperature Dependence of the Reaction Rate. World Journal of Chemical Education. 2020; 8(2):92-99. doi: 10.12691/wjce-8-2-5

Abstract

It is a challenge in chemical education to understand basic principles of chemical reaction kinetics on an experimental basis because of the relatively extensive experimental setup and the often time-consuming measurement series. This contribution offers an introduction into the field of the temperature dependence of reaction rate with easy-to-use experiments. Data logging systems have been used to get sufficient data-sets to evaluate different measurements in reaction kinetics. Several experiments were designed for practical courses in chemistry, which allow students to derive the simple van‘t Hoff rule on the one hand. On the other hand, the Arrhenius equation can only be derived on the basis of experimental data with the help of information from collision theory and Maxwell-Boltzmann distribution.

Keywords:
temperature dependence of reaction rate van‘t Hoff rule Arrhenius equation low-cost photometer

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