Abstract
The volume of a liquid mixture is not equal to the sum of the volumes of its components. In this study, microscale experiments and theoretical calculations from experimental data such as excess molar volumes or densities are applied to mixing equal volumes of alkanol (methanol, ethanol, 1-propanol, or 2-propanol) and water, and the observed and calculated volumes of alkanol-water mixtures (aqueous alkanol solutions) are obtained. Both are in good agreement, and the volumes of alkanols and water are drastically reduced to ca 1/25 using microscale experiments in comparison with traditional ones. The theoretical treatment is also easy for high school and university students. Therefore, it has been demonstrated that our methods are useful and informative as teaching materials for high school science and university first grade chemistry classes
This work is partly supported by a Grant-in-aid for Scientific Research (C) 20500748 from the Japan Society for the Promotion of Science and by an Education Grant from Nissan Science Foundation.
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Nakagawa, T. (2013). Microscale Experiment on Decreases in Volume When Forming Binary Liquid Mixtures: Four Alkanol Aqueous Solutions. In: Chiu, MH., Tuan, HL., Wu, HK., Lin, JW., Chou, CC. (eds) Chemistry Education and Sustainability in the Global Age. Springer, Dordrecht. https://doi.org/10.1007/978-94-007-4860-6_29
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DOI: https://doi.org/10.1007/978-94-007-4860-6_29
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