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dc.creatorPopović, Daniela
dc.creatorMiladinović, Jelena
dc.creatorMiladinović, Zoran P.
dc.creatorGrujić, Snežana
dc.creatorTodorović, Milica D.
dc.creatorRard, Joseph A.
dc.date.accessioned2021-03-10T12:16:04Z
dc.date.available2021-03-10T12:16:04Z
dc.date.issued2013
dc.identifier.issn0021-9614
dc.identifier.urihttp://TechnoRep.tmf.bg.ac.rs/handle/123456789/2532
dc.description.abstractThe molality-based osmotic coefficients of aqueous mixtures of KBr and K2HPO4 have been measured at T = (298.15 +/- 0.01) K by the isopiestic method at KBr ionic strength fractions y = (0.18328, 0.38241, 0.58031, 0.79186, and 1) and over the ionic strength range (2.5452 to 10.0418) mol . kg (-1), using KCl(aq) and CaCl2(aq) as the reference standard solutions. These experiments were performed using glass sample dishes because preliminary experiments showed that some corrosion of our usual gold-plated silver dishes occurred with dissolution of silver, presumably by "pinhole" corrosion at imperfections in the gold layer. These osmotic coefficients were modeled with an extended form of Pitzer's ion-interaction model equations, both with the usual Pitzer mixing terms and with Scatchard's neutral-electrolyte mixing terms, and with the Clegg-Pitzer-Brimblecombe equations based on the mole-fraction-composition scale. There are no previously published isopiestic measurements for this ternary system. The present assessment yields mixing parameters for these models. Model parameters for KBr(aq) at T = (298.15 +/- 0.01) K were also evaluated using the present results along with four sets of osmotic coefficients taken from the published literature. For the {yKBr + (1 -y)K2HPO4}(aq) system, the model with five Scatchard mixing terms gave a significantly better representation of the osmotic coefficients than any of the other models and is therefore recommended for calculation of osmotic and activity coefficients.en
dc.publisherAcademic Press Ltd- Elsevier Science Ltd, London
dc.relationinfo:eu-repo/grantAgreement/MESTD/Basic Research (BR or ON)/172063/RS//
dc.rightsrestrictedAccess
dc.sourceJournal of Chemical Thermodynamics
dc.subjectAqueous solutionsen
dc.subjectIsopiestic measurementsen
dc.subjectKBren
dc.subjectK2HPO4en
dc.subjectOsmotic coefficientsen
dc.subjectActivity coefficientsen
dc.titleIsopiestic determination of the osmotic and activity coefficients of the {yKBr + (1-y)K2HPO4}(aq) system at T=298.15 Ken
dc.typearticle
dc.rights.licenseARR
dc.citation.epage161
dc.citation.other62: 151-161
dc.citation.rankM21
dc.citation.spage151
dc.citation.volume62
dc.identifier.doi10.1016/j.jct.2013.03.003
dc.identifier.rcubconv_4126
dc.identifier.scopus2-s2.0-84876140946
dc.identifier.wos000318612000019
dc.type.versionpublishedVersion


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