A Contribution to the estimation of binary halide and pseudo-halide equilibrium constants using a linear extrapolation methodology

Detalhes bibliográficos
Autor(a) principal: Silva,Astréa F. de S.
Data de Publicação: 2010
Outros Autores: Ortega,Manuel M., Melios,Cristo B., Pezza,Leonardo, Moraes,Mercedes de, Tenan,Mário Alberto, Oliveira,André F.
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Journal of the Brazilian Chemical Society (Online)
Texto Completo: http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0103-50532010000100020
Resumo: The molar single ion activity coefficient (yF) of fluoride ions was determined at 25 °C and ionic strengths between 0.100 and 3.00 mol L-1 NaClO4 using an ion-selective electrode. The activity coefficient dependency on ionic strength was determined to be ΦF = log yF = 0.2315I - 0.041I². The function ΦF(I), combined with functions obtained in previous work for copper (ΦCu) and hydrogen (ΦH), allowed us to make the estimation of the stoichiometric and thermodynamic protonation constants of some halides and pseudo-halides as well as the formation constants of some pseudo-halides and fluoride 1:1 bivalent cation complexes. The calculation procedure proposed in this paper is consistent with critically-selected experimental data. It was demonstrated that it is possible to use ΦF(I) for predicting the thermodynamic equilibrium parameters independently of Pearson's hardness of acids and bases.
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spelling A Contribution to the estimation of binary halide and pseudo-halide equilibrium constants using a linear extrapolation methodologythermodynamic activityion-selective electrode analysisstability constantsThe molar single ion activity coefficient (yF) of fluoride ions was determined at 25 °C and ionic strengths between 0.100 and 3.00 mol L-1 NaClO4 using an ion-selective electrode. The activity coefficient dependency on ionic strength was determined to be ΦF = log yF = 0.2315I - 0.041I². The function ΦF(I), combined with functions obtained in previous work for copper (ΦCu) and hydrogen (ΦH), allowed us to make the estimation of the stoichiometric and thermodynamic protonation constants of some halides and pseudo-halides as well as the formation constants of some pseudo-halides and fluoride 1:1 bivalent cation complexes. The calculation procedure proposed in this paper is consistent with critically-selected experimental data. It was demonstrated that it is possible to use ΦF(I) for predicting the thermodynamic equilibrium parameters independently of Pearson's hardness of acids and bases.Sociedade Brasileira de Química2010-01-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S0103-50532010000100020Journal of the Brazilian Chemical Society v.21 n.1 2010reponame:Journal of the Brazilian Chemical Society (Online)instname:Sociedade Brasileira de Química (SBQ)instacron:SBQ10.1590/S0103-50532010000100020info:eu-repo/semantics/openAccessSilva,Astréa F. de S.Ortega,Manuel M.Melios,Cristo B.Pezza,LeonardoMoraes,Mercedes deTenan,Mário AlbertoOliveira,André F.eng2010-02-18T00:00:00Zoai:scielo:S0103-50532010000100020Revistahttp://jbcs.sbq.org.brONGhttps://old.scielo.br/oai/scielo-oai.php||office@jbcs.sbq.org.br1678-47900103-5053opendoar:2010-02-18T00:00Journal of the Brazilian Chemical Society (Online) - Sociedade Brasileira de Química (SBQ)false
dc.title.none.fl_str_mv A Contribution to the estimation of binary halide and pseudo-halide equilibrium constants using a linear extrapolation methodology
title A Contribution to the estimation of binary halide and pseudo-halide equilibrium constants using a linear extrapolation methodology
spellingShingle A Contribution to the estimation of binary halide and pseudo-halide equilibrium constants using a linear extrapolation methodology
Silva,Astréa F. de S.
thermodynamic activity
ion-selective electrode analysis
stability constants
title_short A Contribution to the estimation of binary halide and pseudo-halide equilibrium constants using a linear extrapolation methodology
title_full A Contribution to the estimation of binary halide and pseudo-halide equilibrium constants using a linear extrapolation methodology
title_fullStr A Contribution to the estimation of binary halide and pseudo-halide equilibrium constants using a linear extrapolation methodology
title_full_unstemmed A Contribution to the estimation of binary halide and pseudo-halide equilibrium constants using a linear extrapolation methodology
title_sort A Contribution to the estimation of binary halide and pseudo-halide equilibrium constants using a linear extrapolation methodology
author Silva,Astréa F. de S.
author_facet Silva,Astréa F. de S.
Ortega,Manuel M.
Melios,Cristo B.
Pezza,Leonardo
Moraes,Mercedes de
Tenan,Mário Alberto
Oliveira,André F.
author_role author
author2 Ortega,Manuel M.
Melios,Cristo B.
Pezza,Leonardo
Moraes,Mercedes de
Tenan,Mário Alberto
Oliveira,André F.
author2_role author
author
author
author
author
author
dc.contributor.author.fl_str_mv Silva,Astréa F. de S.
Ortega,Manuel M.
Melios,Cristo B.
Pezza,Leonardo
Moraes,Mercedes de
Tenan,Mário Alberto
Oliveira,André F.
dc.subject.por.fl_str_mv thermodynamic activity
ion-selective electrode analysis
stability constants
topic thermodynamic activity
ion-selective electrode analysis
stability constants
description The molar single ion activity coefficient (yF) of fluoride ions was determined at 25 °C and ionic strengths between 0.100 and 3.00 mol L-1 NaClO4 using an ion-selective electrode. The activity coefficient dependency on ionic strength was determined to be ΦF = log yF = 0.2315I - 0.041I². The function ΦF(I), combined with functions obtained in previous work for copper (ΦCu) and hydrogen (ΦH), allowed us to make the estimation of the stoichiometric and thermodynamic protonation constants of some halides and pseudo-halides as well as the formation constants of some pseudo-halides and fluoride 1:1 bivalent cation complexes. The calculation procedure proposed in this paper is consistent with critically-selected experimental data. It was demonstrated that it is possible to use ΦF(I) for predicting the thermodynamic equilibrium parameters independently of Pearson's hardness of acids and bases.
publishDate 2010
dc.date.none.fl_str_mv 2010-01-01
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
format article
status_str publishedVersion
dc.identifier.uri.fl_str_mv http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0103-50532010000100020
url http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0103-50532010000100020
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv 10.1590/S0103-50532010000100020
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv text/html
dc.publisher.none.fl_str_mv Sociedade Brasileira de Química
publisher.none.fl_str_mv Sociedade Brasileira de Química
dc.source.none.fl_str_mv Journal of the Brazilian Chemical Society v.21 n.1 2010
reponame:Journal of the Brazilian Chemical Society (Online)
instname:Sociedade Brasileira de Química (SBQ)
instacron:SBQ
instname_str Sociedade Brasileira de Química (SBQ)
instacron_str SBQ
institution SBQ
reponame_str Journal of the Brazilian Chemical Society (Online)
collection Journal of the Brazilian Chemical Society (Online)
repository.name.fl_str_mv Journal of the Brazilian Chemical Society (Online) - Sociedade Brasileira de Química (SBQ)
repository.mail.fl_str_mv ||office@jbcs.sbq.org.br
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