Conductance of some high valence type electrolytes in mixed solvents. II. Conductance of pentaamminenitrocobalt(III) and tris(1,10-phenanthroline)iron(II) sulfates in water-ethylene glycol mixtures at 25.DEG.C.
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概要
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Conductance data are reported for dilute solutions of pentaamminenitrocobalt(III) sulfate, [Co(NO<SUB>2</SUB>)(NH<SUB>3</SUB>)<SUB>5</SUB>]SO<SUB>4</SUB>, and tris(1,10-phenanthroline)iron(II) sulfate, [Fe(phen)<SUB>3</SUB>]SO<SUB>4</SUB> in water–ethylene glycol mixed solvents at 25 °C. The conductance data were analyzed in terms of the 1957 Fuoss-Onsager and Fuoss-Hsia equations. While the application of the 1957 Fuoss-Onsager equation to [Fe(phen)<SUB>3</SUB>]SO<SUB>4</SUB> data suggested a complete dissociation of the salt over the entire range of solvent compositions, the Fuoss-Hsia equation fitted the data better and yielded <I>K</I><SUB>A</SUB> values which are in accord with the ion association theories. [Co(NO<SUB>2</SUB>)(NH<SUB>3</SUB>)<SUB>5</SUB>]SO<SUB>4</SUB> had a higher association constant in the range of solvent composition studied (0 to 40% ethylene glycol) than the predictions of the ion association theories.
- 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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