Heat capacities of aqueous solutions of glutaric and malonic acids.
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概要
- 論文の詳細を見る
Using a calorimeter composed of a Dewar vessel and a Beckmann thermometer, the specific heat capacities of aqueous solutions of glutaric and malonic acids were measured at 30 °C. Techniques for establishing the temperature gadient between the solution in the Dewar and the outer air bath were adopted. The partial molar heat capacities at infinite dilution were estimated assuming a relation of the form <I>m</I>φ<I><SUB>Cp</SUB></I>=<I>bm</I>+<I>cm</I><SUP>2</SUP>. The contributions of the –CH<SUB>2</SUB>– and –COOH groups to the partial molar heat capacities in aqueous solution are roughly additive: for –CH<SUB>2</SUB>– a positive contribution and for –COOH a negative one. The <I>Δ</I>(=‾<I>Cp</I><SUB>2</SUB>°–Cp<SUB>2</SUB>(pure state)) were also calculated and positive and negative values were obtained for <I>Δ</I>(–CH<SUB>2</SUB>–) and <I>Δ</I>(–COOH), respectively.
- 公益社団法人 日本化学会の論文
著者
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Miyahara Yutaka
Department Of Chemical Engineering Faculty Of Engineering Nagoya University
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Kawaizumi Fumio
Department of Chemical Engineering, Nagoya University
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Noguchi Tuneyuki
Department of Chemical Engineering, Faculty of Engineering, Nagoya University
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