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Isopiestic investigation of the osmotic and activity coefficients of {yMgCl(2)+(1-y)MgSO4}(aq) and the osmotic coefficients of Na2SO4 center dot MgSO4(aq) at 298.15 K
dc.creator | Miladinović, Jelena | |
dc.creator | Ninković, Rozalija | |
dc.creator | Todorović, Milica D. | |
dc.creator | Rard, Joseph A. | |
dc.date.accessioned | 2021-03-10T10:54:20Z | |
dc.date.available | 2021-03-10T10:54:20Z | |
dc.date.issued | 2008 | |
dc.identifier.issn | 0095-9782 | |
dc.identifier.uri | http://TechnoRep.tmf.bg.ac.rs/handle/123456789/1262 | |
dc.description.abstract | Isopiestic vapor-pressure measurements were made for {yMgCl(2) + (1-y)MgSO4}(aq) solutions with MgCl2 ionic strength fractions of y = (0,0.1997,0.3989,0.5992,0.8008, and 1) at the temperature 298.15 K, using KCl(aq) as the reference standard. These measurements for the mixtures cover the ionic strength range I=0.9794 to 9.4318 mol.kg(-1). In addition, isopiestic measurements were made with NaCl(aq) as reference standard for mixtures of {xNa(2)SO(4) + (1-x)MgSO4}(aq) with the molality fraction x = 0.5000 that correspond to solutions of the evaporite mineral bloedite (astrakanite), Na2Mg(SO4)(2).4H(2)O(cr). The total molalities, m (T)=m(Na2SO4) + m(MgSO4), range from m(T) = 1.4479 to 4.4312 mol.kg(-1) (I=5.0677 to 15.509 mol.kg(-1)), where the uppermost concentration is the highest oversaturation molality that could be achieved by isothermal evaporation of the solvent at 298.15 K. The parameters of an extended ion-interaction (Pitzer) model for MgCl2(aq) at 298.15 K, which were required for an analysis of the {yMgCl(2) + (1-y)MgSO4}(aq) mixture results, were evaluated up to I=12.075 mol.kg(-1) from published isopiestic data together with the six new osmotic coefficients obtained in this study. Osmotic coefficients of {yMgCl(2) + (1-y)MgSO4}(aq) solutions from the present study, along with critically-assessed values from previous studies, were used to evaluate the mixing parameters of the extended ion-interaction model. | en |
dc.publisher | Springer/Plenum Publishers, New York | |
dc.relation | info:eu-repo/grantAgreement/MESTD/MPN2006-2010/142064/RS// | |
dc.rights | restrictedAccess | |
dc.source | Journal of Solution Chemistry | |
dc.subject | isopiestic measurements | en |
dc.subject | mixed electrolyte solutions | en |
dc.subject | aqueous solutions | en |
dc.subject | magnesium chloride | en |
dc.subject | magnesium sulfate | en |
dc.subject | sodium sulfate | en |
dc.subject | extended Pitzer model | en |
dc.title | Isopiestic investigation of the osmotic and activity coefficients of {yMgCl(2)+(1-y)MgSO4}(aq) and the osmotic coefficients of Na2SO4 center dot MgSO4(aq) at 298.15 K | en |
dc.type | article | |
dc.rights.license | ARR | |
dc.citation.epage | 329 | |
dc.citation.issue | 3 | |
dc.citation.other | 37(3): 307-329 | |
dc.citation.rank | M23 | |
dc.citation.spage | 307 | |
dc.citation.volume | 37 | |
dc.identifier.doi | 10.1007/s10953-007-9238-y | |
dc.identifier.scopus | 2-s2.0-39149138979 | |
dc.identifier.wos | 000252976400002 | |
dc.type.version | publishedVersion |