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The electric conductivities of aqueous solutions of rubidium and cesium cyclohexylsulfamates, potassium acesulfame and sodium saccharin
ID Rudan Tasič, Darja (Author), ID Klofutar, Cveto (Author), ID Bešter-Rogač, Marija (Author)

URLURL - Presentation file, Visit http://acta.chem-soc.si/53/53-3-324.pdf This link opens in a new window

Abstract
The electric conductivities of aqueous solutions of rubidium and cesium salts of cyclohexylsulfamic acid, potassium acesulfame and sodium saccharin were measured from 5 °C to 35 °C (in steps of 5 °C) in the concentration range 0.0003 < c/mol dm-3 < 0.01. Data analysis based on the chemical model of electroyte solutions yielded the limiting molar conductivity .. and the association constant KA. Using the known data of the limiting conductivities of rubidium, cesium, sodium and potassium ions the limiting conductivities of the cyclohexylsulfamate, accesulfame and saccharin ions were evaluated. Total dissociation of the investigated salts in water and negligible hydration of anions are evident.

Language:English
Keywords:fizikalna kemija, raztopine elektrolitov, elektrolitske raztopine, vodne raztopine, električna prevodnost, molska prevodnost, meritve prevodnosti raztopin, kemijski model, alkalijski cikloheksilsulfamati, kalijev acesulfam, ioni, elektroliti, umetna sladila, natrijev saharin, electrolyte conductivity, electrolyte solution, cyclohexylsulfamates, acesulfame, saccharin, chemical model
Work type:Not categorized
Typology:1.01 - Original Scientific Article
Organization:BF - Biotechnical Faculty
Publisher:Slovensko kemijsko društvo
Year:2006
Number of pages:Str. 324-330
Numbering:Vol. 53, no. 3
PID:20.500.12556/RUL-60363 This link opens in a new window
UDC:544.35:544.6.018:544.623
ISSN on article:1318-0207
COBISS.SI-ID:27955461 This link opens in a new window
Publication date in RUL:10.07.2015
Views:1606
Downloads:357
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Record is a part of a journal

Title:Acta chimica slovenica
Shortened title:Acta chim. slov.
Publisher:Slovensko kemijsko društvo, =Slovenian Chemical Society
ISSN:1318-0207
COBISS.SI-ID:14086149 This link opens in a new window

Secondary language

Language:English
Abstract:
Izmerili smo električno prevodnost razredčenih vodnih raztopin rubidijevega in cezijevega cikloheksilsulfamata, natrijevega saharina in kalijevega acesulfama v temperaturenem obmoèju med 5 in 35 °C v obmoèju koncentracij med 0.0003 . c/ mol dm-3 . 0.01. Na osnovi kemijskega modela smo določili vrednosti molskih prevodnosti pri neskončnem razredèenju, .., ter konstane asociacije ionov, KA, v posameznem sistemu. S pomočjo znanih vrednosti limitnih prevodnosti kationov smo ocenili limitne prevodnosti cikloheksilsulfamatnega, saharinovega in acesulfamovega aniona. Ugotovili smo, da je delež ionskih parov v raztopini zanemarljiv in preiskovanim elektrolitom v vodnih raztopinah lahko pripišemo popolno disociacijo v celotnem obravnavanem temperaturnem območju ter zanemarljivo hidratacijo anionov.


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