Ionic medium effects on equilibrium constants .1. Proton, copper(II), cadmium(II), lead(II) and acetate activity coefficients in aqueous solution

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dc.contributor.authorPezza, Leonardo [UNESP]
dc.contributor.authorMolina, M.
dc.contributor.authordeMoraes, M.
dc.contributor.authorMelios, C. B.
dc.contributor.authorTognolli, J. O.
dc.contributor.institutionUniversidade Estadual Paulista (Unesp)
dc.contributor.institutionUNIV FED MARAHAO
dc.date.accessioned2014-05-20T15:29:27Z
dc.date.available2014-05-20T15:29:27Z
dc.date.issued1996-10-01
dc.description.abstractThe molar single ion activity coefficients associated with hydrogen, copper(II), cadmium(II) and lead(II) ions were determined at 25 degrees C and ionic strengths between 0.100 and 3.00 M (NaClO4), whereas for acetate the ionic strengths were fixed between 0.300 and 2.00 M, held with the same inert electrolyte. The investigation was carried out potentiometrically by using proton-sensitive glass, copper, cadmium and lead ion-selective electrodes and a second-class Hg\Hg-2(CH3COO)(2) electrode. It was found that the activity coefficients of these ions (y(i)) can be assessed through the following empirical equations:log y(H) = -0.542I(0.5) + 0.451I; log y(Cu) = -1.249I(0.5) + 0.912I; log y(Cd) = -0.829I(0.5) + 0.448I(1.5);log y(Pb) = -0.404I(0.5) + 0.117I(2); and log y(Ac) = 0.0370I .en
dc.description.affiliationUNESP,INST QUIM,DEPT QUIM ANALIT,BR-14800900 ARARAQUARA,SP,BRAZIL
dc.description.affiliationUNESP,INST QUIM,DEPT QUIM ORGAN,BR-14800900 ARARAQUARA,SP,BRAZIL
dc.description.affiliationUNIV FED MARAHAO,CTR TECNOL,DEPT QUIM,BR-65080040 SAO LUIS,MA,BRAZIL
dc.description.affiliationUnespUNESP,INST QUIM,DEPT QUIM ANALIT,BR-14800900 ARARAQUARA,SP,BRAZIL
dc.description.affiliationUnespUNESP,INST QUIM,DEPT QUIM ORGAN,BR-14800900 ARARAQUARA,SP,BRAZIL
dc.format.extent1689-1695
dc.identifierhttp://dx.doi.org/10.1016/0039-9140(96)01944-3
dc.identifier.citationTalanta. Amsterdam: Elsevier B.V., v. 43, n. 10, p. 1689-1695, 1996.
dc.identifier.doi10.1016/0039-9140(96)01944-3
dc.identifier.issn0039-9140
dc.identifier.lattes5978908591853524
dc.identifier.orcid0000-0003-0197-7369
dc.identifier.urihttp://hdl.handle.net/11449/39054
dc.identifier.wosWOS:A1996VL15100010
dc.language.isoeng
dc.publisherElsevier B.V.
dc.relation.ispartofTalanta
dc.relation.ispartofjcr4.244
dc.relation.ispartofsjr1,186
dc.rights.accessRightsAcesso restrito
dc.sourceWeb of Science
dc.subjectionic activity coefficientspt
dc.subjectionic medium effectspt
dc.titleIonic medium effects on equilibrium constants .1. Proton, copper(II), cadmium(II), lead(II) and acetate activity coefficients in aqueous solutionen
dc.typeArtigo
dcterms.licensehttp://www.elsevier.com/about/open-access/open-access-policies/article-posting-policy
dcterms.rightsHolderElsevier B.V.
unesp.author.lattes5978908591853524
unesp.author.orcid0000-0003-0197-7369[1]
unesp.campusUniversidade Estadual Paulista (Unesp), Instituto de Química, Araraquarapt

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