Conductivity of iron(II) sulfate in aqueous solution at various temperatures.
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概要
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The molar conductivity of iron(II) sulfate, FeSO<SUB>4</SUB>, in water was measured in the temperature range 10–35°C. Data were analyzed by the Quint–Viallard equation, and the resulting ion association constant, <I>K</I><SUB>A</SUB>, was applied to the Bjerrum equation to determine the contact ion size, <I>R</I><SUB>B</SUB>. The limiting ionic molar conductivity of iron(II) at 25°C is λ<SUB>0</SUB>(1⁄2Fe<SUP>2+</SUP>)=53.8 S cm<SUP>2</SUP> mol<SUP>−1</SUP>. Thermodynamic properties of ion association reactions are Δ<I>G</I><SUB>298</SUB><SUP>°</SUP>=−13.7 kJ mol<SUP>−1</SUP>, Δ<I>H</I><SUP>°</SUP>=9.7 kJ mol<SUP>−1</SUP>, and Δ<I>S</I><SUB>298</SUB><SUP>°</SUP>=78.0 J K<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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Mochizuki Yoshiaki
Department of Chemistry, Faculty of Science, Shinshu University
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