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Osmotic and activity coefficients of the {xZnCl(2)+(1-x)ZnSO4}(aq) system at 298.15 K
dc.creator | Ninković, Rozalija | |
dc.creator | Miladinović, Jelena | |
dc.creator | Todorović, Milica D. | |
dc.creator | Grujić, Snežana | |
dc.creator | Rard, Joseph A. | |
dc.date.accessioned | 2021-03-10T10:43:11Z | |
dc.date.available | 2021-03-10T10:43:11Z | |
dc.date.issued | 2007 | |
dc.identifier.issn | 0095-9782 | |
dc.identifier.uri | http://TechnoRep.tmf.bg.ac.rs/handle/123456789/1089 | |
dc.description.abstract | Isopiestic vapor pressure measurements were made for {xZnCl(2)+(1-x)ZnSO4}(aq) solutions with ZnCl2 molality fractions of x=(0,0.3062,0.5730,0.7969, and 1) at the temperature 298.15 K, using KCl(aq) as the reference standard. These measurements cover the water activity range 0.901-0.919 lt = a(w) lt = 0.978. The experimental osmotic coefficients were used to evaluate the parameters of an extended ion-interaction (Pitzer) model for these mixed electrolyte solutions. A similar analysis was made of the available activity data for ZnCl2(aq) at 298.15 K, while assuming the presence of equilibrium amounts of ZnCl+(aq) ion-pairs, to derive the ion-interaction parameters for the hypothetical pure binary electrolytes (Zn2+,2Cl(-)) and (ZnCl+,Cl-). These parameters are required for the analysis of the mixture results. Although significant concentrations of higher-order zinc chloride complexes may also be present in these solutions, it was possible to represent the osmotic coefficients accurately by explicitly including only the predominant complex ZnCl+(aq) and the completely dissociated ions. The ionic activity coefficients and osmotic coefficients were calculated over the investigated molality range using the evaluated extended Pitzer model parameters. | en |
dc.publisher | Springer/Plenum Publishers, New York | |
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 | zinc chloride | en |
dc.subject | zinc sulfate | en |
dc.subject | extended Pitzer model | en |
dc.title | Osmotic and activity coefficients of the {xZnCl(2)+(1-x)ZnSO4}(aq) system at 298.15 K | en |
dc.type | article | |
dc.rights.license | ARR | |
dc.citation.epage | 435 | |
dc.citation.issue | 4 | |
dc.citation.other | 36(4): 405-435 | |
dc.citation.rank | M23 | |
dc.citation.spage | 405 | |
dc.citation.volume | 36 | |
dc.identifier.doi | 10.1007/s10953-007-9128-3 | |
dc.identifier.scopus | 2-s2.0-34247593507 | |
dc.identifier.wos | 000246150200001 | |
dc.type.version | publishedVersion |