Studies on the aqueous solutions of guanidinium salts. VII. Activity coefficients and partial molar volumes for guanidinium salts with hydrophobic counter anions in aqueous solutions.
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概要
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Mean activity coefficients (γ<SUB>±</SUB>) and partial molar volumes of guanidinium salts with hydrophobic counter anions were measured by isopiestic comparison method and densitometry, respectively. The values of γ<SUB>±</SUB> were low and the order of γ<SUB>±</SUB> values found to be acetate>propionate>benzoate. The <I>b</I><SUB>v</SUB> values from the Redlich-Rosenfeld's equation were slightly positive at 15 and 25 °C, and decreased with increased temperature. These results were interpreted in terms of the unique structure breaking action of guanidinium ions and the interionic interactions.
- 公益社団法人 日本化学会の論文
著者
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Miyajima Koichiro
Faculty Of Pharmaceutical Science Kyoto University
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Nakagaki Masayuki
Faculty of Living Science Osaka City University
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Yoshida Hiromitsu
Faculty of Pharmaceutical Sciences of Kyoto University
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