caa a22 4500 477138969 CHVBK 20180405111727.0 cr unu---uuuuu 170330e19970601xx s 000 0 eng 10.1007/BF02767630 doi (NATIONALLICENCE)springer-10.1007/BF02767630 Conductance of the hydroxide ion in tert -butyl alcohol-water and 1,4-dioxane-water mixtures [Elektronische Daten] [Yuichiro Tada, Kazuyasu Ibuki, Noriaki Tsuchihashi, Masakatsu Ueno] Limiting molar conductances λo of potassium hydroxide in 2 to 25 mol%tert-butyl alcohol (TBA)-water mixtures were determined at 25°C as a function of pressure up to 196 MPa. λo's of KOH in (2.5 to 15 mol%) 1,4-dioxane-water mixtures at 25°C and 1 atm were also determined. The excess conductance λ o e of the OH- ion estimated as [λ o e (OH-) = λo(KOH) - λo(KCl)] decreased with an increase in the TBA or dioxane content, as did the excess proton conductance λ o e (H+) [λ o e (H+) = λO(HC1) - λo(KCl)]. Although λ o e (OH-) is smaller than λ o e (H+) at all solvent compositions studied, the rate of decrease in λ o e with organic content is larger for the OH- ion than for the H3O+ ion in both solvent mixtures except in the water-rich region of TBA-water mixtures. λ o e (OH-) increases with pressure more strongly in TBA-water mixtures than in pure water, and the rate of increase in λ o e (OH-) with pressure has a maximum at 5 mol% of TBA. These results are discussed in terms of the difference in stability of hydrogen bonds between the OH- or the H3O+ ion and water molecules and the increase in repulsive forces due to the orientation [H-O O-H] of water molecules in the mixtures. Plenum Publishing Corporation, 1997 Proton jump nationallicence excess conductance nationallicence tert -butyl alcohol-water mixture nationallicence dioxane-water mixture nationallicence hydrogen bonds nationallicence pressure effect nationallicence Tada Yuichiro Department of Molecular Science and Technology, Faculty of Engineering, Doshisha University, Kyotanabe, 610-03, Kyoto, Japan aut Ibuki Kazuyasu Department of Molecular Science and Technology, Faculty of Engineering, Doshisha University, Kyotanabe, 610-03, Kyoto, Japan aut Tsuchihashi Noriaki Department of Molecular Science and Technology, Faculty of Engineering, Doshisha University, Kyotanabe, 610-03, Kyoto, Japan aut Ueno Masakatsu Department of Molecular Science and Technology, Faculty of Engineering, Doshisha University, Kyotanabe, 610-03, Kyoto, Japan aut Journal of Solution Chemistry Springer US 26/6(1997-06-01), 595-607 0095-9782 26:6<595 1997 26 10953 https://doi.org/10.1007/BF02767630 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/BF02767630 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Tada Yuichiro Department of Molecular Science and Technology, Faculty of Engineering, Doshisha University, Kyotanabe, 610-03, Kyoto, Japan aut NATIONALLICENCE 700 1- Ibuki Kazuyasu Department of Molecular Science and Technology, Faculty of Engineering, Doshisha University, Kyotanabe, 610-03, Kyoto, Japan aut NATIONALLICENCE 700 1- Tsuchihashi Noriaki Department of Molecular Science and Technology, Faculty of Engineering, Doshisha University, Kyotanabe, 610-03, Kyoto, Japan aut NATIONALLICENCE 700 1- Ueno Masakatsu Department of Molecular Science and Technology, Faculty of Engineering, Doshisha University, Kyotanabe, 610-03, Kyoto, Japan aut NATIONALLICENCE 773 0- Journal of Solution Chemistry Springer US 26/6(1997-06-01), 595-607 0095-9782 26:6<595 1997 26 10953 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer