caa a22 4500 445327731 CHVBK 20180317142726.0 cr unu---uuuuu 170323e20110901xx s 000 0 eng 10.1007/s10953-011-9741-z doi (NATIONALLICENCE)springer-10.1007/s10953-011-9741-z Apelblat Alexander Department of Chemical Engineering, Ben-Gurion University of the Negev, 84105, Beer Sheva, Israel aut Representation of Electrical Conductances for Polyvalent Electrolytes by the Quint-Viallard Conductivity Equation. Universal Curves of Limiting Conductances and Walden Products of Electrolytes in Mixed Solvents. Part 5. Symmetrical 2:2, 3:3 and Unsymmetrical 1:2, 2:1 and 1:3 Type Electrolytes [Elektronische Daten] [Alexander Apelblat] Conductivities of symmetrical and unsymmetrical electrolytes of 2:2, 3:3, 1:2, 2:1 and 1:3 types in ethanol-water and the 1,4-dioxane-water mixtures were analyzed using the Quint-Viallard conductivity equation and taking into account the ion association effect. The molar limiting conductances and the ion association constants were reexamined for various multivalent electrolytes. One non-aqueous system, methanol-ethylene glycol mixtures, was also considered. The limiting conductances were also examined in the framework of universal curves of limiting conductances and the excess Walden products introduced by the author. These new concepts in the analysis of conductance data allow the estimation of values of limiting conductances of electrolytes or ions, to give an indication about the quality of the conductivity measurements and the type of interactions expected in the systems. It was found that for any type of electrolyte only one universal curve of limiting conductances exists. In the water-rich mixtures, attractive interactions (structure-making effects) are expected when electrolytes are added to mixtures with ethanol or with 1,4-dioxane. In contrast, in ethylene glycol-methanol-rich mixtures repulsive interactions (structure-breaking effects) are more likely. Springer Science+Business Media, LLC, 2011 Electrical conductances of symmetrical and asymmetric electrolytes nationallicence Molar and ionic limiting conductances nationallicence Ion association constants nationallicence Walden products nationallicence Ethanol-water nationallicence 1,4-Dioxane-water nationallicence Methanol-1,2-ethanediol nationallicence Journal of Solution Chemistry Springer US; http://www.springer-ny.com 40/9(2011-09-01), 1544-1562 0095-9782 40:9<1544 2011 40 10953 https://doi.org/10.1007/s10953-011-9741-z text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s10953-011-9741-z text/html Onlinezugriff via DOI NATIONALLICENCE 100 1- Apelblat Alexander Department of Chemical Engineering, Ben-Gurion University of the Negev, 84105, Beer Sheva, Israel aut NATIONALLICENCE 773 0- Journal of Solution Chemistry Springer US; http://www.springer-ny.com 40/9(2011-09-01), 1544-1562 0095-9782 40:9<1544 2011 40 10953 Metadata rights reserved Springer special CC-BY-NC licence nationallicence SWISSBIB 445327731 BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer