A simple and accurate evaluation of hydrogen-ion concentrations in aqueous solutions of fixed ionic strength

Detalhes bibliográficos
Autor(a) principal: Molina, M. [UNESP]
Data de Publicação: 1979
Outros Autores: Melios, C. [UNESP], Tognolli, J. O. [UNESP], Luchiari, L. C. [UNESP], Jafelicci, M. [UNESP]
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Institucional da UNESP
Texto Completo: http://dx.doi.org/10.1016/S0022-0728(79)80117-5
http://hdl.handle.net/11449/224325
Resumo: A method for determining hydrogen-ion concentrations based on emf measurements of cells consisting of glass electrodes coupled with modified calomel reference electrodes is described. The calibration is effected against dilute perchloric acid and sodium hydroxide solutions; a correction for liquid junction potentials is applied. The accuracy and precision of different methods used for calibrating glass electrodes in cells with liquid junctions is discussed and the effect of different calibrations on the determination of equilibrium constants (namely, protonation constants of glycine and stability constants of copper(II)-glycine complexes) is demonstrated. The constants determined are compared with those already published for the same systems. © 1979 Elsevier Sequoia S.A.
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spelling A simple and accurate evaluation of hydrogen-ion concentrations in aqueous solutions of fixed ionic strengthA method for determining hydrogen-ion concentrations based on emf measurements of cells consisting of glass electrodes coupled with modified calomel reference electrodes is described. The calibration is effected against dilute perchloric acid and sodium hydroxide solutions; a correction for liquid junction potentials is applied. The accuracy and precision of different methods used for calibrating glass electrodes in cells with liquid junctions is discussed and the effect of different calibrations on the determination of equilibrium constants (namely, protonation constants of glycine and stability constants of copper(II)-glycine complexes) is demonstrated. The constants determined are compared with those already published for the same systems. © 1979 Elsevier Sequoia S.A.Departamento de Química Analítica, Instituto de Química, UNESP, Caixa Postal 174, Araraquara, 14, 800, SPDepartamento de Química Analítica, Instituto de Química, UNESP, Caixa Postal 174, Araraquara, 14, 800, SPUniversidade Estadual Paulista (UNESP)Molina, M. [UNESP]Melios, C. [UNESP]Tognolli, J. O. [UNESP]Luchiari, L. C. [UNESP]Jafelicci, M. [UNESP]2022-04-28T19:55:57Z2022-04-28T19:55:57Z1979-12-24info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/article237-246http://dx.doi.org/10.1016/S0022-0728(79)80117-5Journal of Electroanalytical Chemistry, v. 105, n. 2, p. 237-246, 1979.0022-0728http://hdl.handle.net/11449/22432510.1016/S0022-0728(79)80117-52-s2.0-0039220488Scopusreponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengJournal of Electroanalytical Chemistryinfo:eu-repo/semantics/openAccess2022-04-28T19:55:57Zoai:repositorio.unesp.br:11449/224325Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462024-08-05T18:25:21.347098Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false
dc.title.none.fl_str_mv A simple and accurate evaluation of hydrogen-ion concentrations in aqueous solutions of fixed ionic strength
title A simple and accurate evaluation of hydrogen-ion concentrations in aqueous solutions of fixed ionic strength
spellingShingle A simple and accurate evaluation of hydrogen-ion concentrations in aqueous solutions of fixed ionic strength
Molina, M. [UNESP]
title_short A simple and accurate evaluation of hydrogen-ion concentrations in aqueous solutions of fixed ionic strength
title_full A simple and accurate evaluation of hydrogen-ion concentrations in aqueous solutions of fixed ionic strength
title_fullStr A simple and accurate evaluation of hydrogen-ion concentrations in aqueous solutions of fixed ionic strength
title_full_unstemmed A simple and accurate evaluation of hydrogen-ion concentrations in aqueous solutions of fixed ionic strength
title_sort A simple and accurate evaluation of hydrogen-ion concentrations in aqueous solutions of fixed ionic strength
author Molina, M. [UNESP]
author_facet Molina, M. [UNESP]
Melios, C. [UNESP]
Tognolli, J. O. [UNESP]
Luchiari, L. C. [UNESP]
Jafelicci, M. [UNESP]
author_role author
author2 Melios, C. [UNESP]
Tognolli, J. O. [UNESP]
Luchiari, L. C. [UNESP]
Jafelicci, M. [UNESP]
author2_role author
author
author
author
dc.contributor.none.fl_str_mv Universidade Estadual Paulista (UNESP)
dc.contributor.author.fl_str_mv Molina, M. [UNESP]
Melios, C. [UNESP]
Tognolli, J. O. [UNESP]
Luchiari, L. C. [UNESP]
Jafelicci, M. [UNESP]
description A method for determining hydrogen-ion concentrations based on emf measurements of cells consisting of glass electrodes coupled with modified calomel reference electrodes is described. The calibration is effected against dilute perchloric acid and sodium hydroxide solutions; a correction for liquid junction potentials is applied. The accuracy and precision of different methods used for calibrating glass electrodes in cells with liquid junctions is discussed and the effect of different calibrations on the determination of equilibrium constants (namely, protonation constants of glycine and stability constants of copper(II)-glycine complexes) is demonstrated. The constants determined are compared with those already published for the same systems. © 1979 Elsevier Sequoia S.A.
publishDate 1979
dc.date.none.fl_str_mv 1979-12-24
2022-04-28T19:55:57Z
2022-04-28T19:55:57Z
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
format article
status_str publishedVersion
dc.identifier.uri.fl_str_mv http://dx.doi.org/10.1016/S0022-0728(79)80117-5
Journal of Electroanalytical Chemistry, v. 105, n. 2, p. 237-246, 1979.
0022-0728
http://hdl.handle.net/11449/224325
10.1016/S0022-0728(79)80117-5
2-s2.0-0039220488
url http://dx.doi.org/10.1016/S0022-0728(79)80117-5
http://hdl.handle.net/11449/224325
identifier_str_mv Journal of Electroanalytical Chemistry, v. 105, n. 2, p. 237-246, 1979.
0022-0728
10.1016/S0022-0728(79)80117-5
2-s2.0-0039220488
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv Journal of Electroanalytical Chemistry
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv 237-246
dc.source.none.fl_str_mv Scopus
reponame:Repositório Institucional da UNESP
instname:Universidade Estadual Paulista (UNESP)
instacron:UNESP
instname_str Universidade Estadual Paulista (UNESP)
instacron_str UNESP
institution UNESP
reponame_str Repositório Institucional da UNESP
collection Repositório Institucional da UNESP
repository.name.fl_str_mv Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)
repository.mail.fl_str_mv
_version_ 1808128929823719424

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