Thermodynamic Analysis of Ion-Pair Partition of Methyl Orange Anion with Alkali Metal Cations in an Octanol-Water System
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概要
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The ion-pair partition of methyl orange anion with the alkali metal cations Na^+, K^+ and Cs^+ in an octanol-water system was studied at various temperatures. The ion-pair partition process could be divided into two processes; ion-pair formation and transfer of the ion-pair. The results showed that the degree of ion-pair formation increased with temperature, while the degree of partition of an ion-pair decreased with temperature for all alkali metal cations. The ion-pair partition of methyl orange anion was shown to be greatest with Cs^+. The thermodynamic parameters ΔG^θ, ΔS^θ and ΔH^θ for these two processes were determined. The values are discussed in relation to the degree of hydration of these alkali metal cations.
- 社団法人日本薬学会の論文
- 1988-08-25
著者
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吉川 祐子
Faculty Of Pharmaceutical Sciences University Of Tokushima
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寺田 弘
Faculty of Pharmaceutical Sciences, University of Tokushima
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寺田 弘
Faculty Of Pharmaceutical Sciences University Of Tokushima
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寺田 弘
Faculty Of Pharmaceutical Sciences The University Of Tokushima
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