Conductivity of Manganese(II) Sulfate in Aqueous Solution at Various Temperatures.
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概要
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The molar conductivity of manganese(II) sulfate, MnSC<SUB>4</SUB>, in aqueous solution was measured in a temperature range of 10–45°C. The acquired data were analyzed by the Quint-Viallard equation, and the resulting ion association constant, <I>K</I><SUB>A</SUB>, was used in the Bjerrum equation to determine the contact ion size, <I>R</I><SUB>B</SUB>. The limiting ionic molar conductivity λ<SUB>0</SUB> (1/2 Mn<SUP>2+</SUP>) for the manganese ion at 15, 25, 35, and 45°C are 40.8, 53.1, 65.2, and 79.8 S cm<SUP>2</SUP> mol<SUP>−1</SUP>, respectively. The resulting thermodynamic properties for the ion association reaction are: Δ<I>G</I><SUP>°</SUP><SUB>298</SUB>=−13.5 kJ mol<SUP>−1</SUP>, Δ<I>H</I><SUP>°</SUP>=7.91 kJ mol<SUP>−1</SUP>, and Δ<I>S</I><SUP>°</SUP><SUB>298</SUB>=74.1 JK<SUP>−1</SUP> mol<SUP>−1</SUP>.
- 公益社団法人 日本化学会の論文
著者
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Yokoi Masatoki
Department of Chemistry, Faculty of Science, Shinshu University
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Kubota Eiji
Department of Chemistry, Faculty of Science, Shinshu University
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Takizawa Satoru
Department of Chemistry, Faculty of Science, Shinshu University
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Kashiwagi Wataru
Department of Chemistry, Faculty of Science, Shinshu University
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