Activity coefficients of sodium benzoate and potassium benzoate in water at 298.15 K
Autor(a) principal: | |
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Data de Publicação: | 2003 |
Outros Autores: | , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
Texto Completo: | http://hdl.handle.net/10400.6/12317 |
Resumo: | Industrial additives, like sodium benzoate and potassium benzoate, are used in low concentrations in aqueous solutions. However, in general, the ionic strength of the aqueous media is high. The Pitzer model allows the determination of activity coefficients in aqueous media. In this work, Pitzer parameters for sodium benzoate were recalculated (β(0)=0.162 mol−1 kg and β(1)=0.38 mol−1 kg) and Pitzer parameters for potassium benzoate were determined (β(0)=0.157 mol−1 kg and β(1)=0.27 mol−1 kg) from cell potential difference (cpd) measurements on galvanic cells without liquid junction. From these values, activity coefficients of potassium benzoate in water and in aqueous potassium chloride solutions were calculated by the Pitzer model. The activity coefficients were also calculated by modified Guggenheim equations with parameters obtained in this work and the results of the two models were compared. |
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Activity coefficients of sodium benzoate and potassium benzoate in water at 298.15 KPotassium benzoateSodium benzoateActivity coefficientsPitzer modelGuggenheim modelIndustrial additives, like sodium benzoate and potassium benzoate, are used in low concentrations in aqueous solutions. However, in general, the ionic strength of the aqueous media is high. The Pitzer model allows the determination of activity coefficients in aqueous media. In this work, Pitzer parameters for sodium benzoate were recalculated (β(0)=0.162 mol−1 kg and β(1)=0.38 mol−1 kg) and Pitzer parameters for potassium benzoate were determined (β(0)=0.157 mol−1 kg and β(1)=0.27 mol−1 kg) from cell potential difference (cpd) measurements on galvanic cells without liquid junction. From these values, activity coefficients of potassium benzoate in water and in aqueous potassium chloride solutions were calculated by the Pitzer model. The activity coefficients were also calculated by modified Guggenheim equations with parameters obtained in this work and the results of the two models were compared.Elsevier B.V.uBibliorumMendonça, AntónioCardoso, Cristina M. P.Juusola, Pekka M.2022-08-24T16:03:54Z20032003-01-01T00:00:00Zinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleapplication/pdfhttp://hdl.handle.net/10400.6/12317engDe Mendonça, A. J. G., Cardoso, C. M. P., & Juusola, P. M. (2003). Activity coefficients of sodium benzoate and potassium benzoate in water at 298.15 K. Fluid Phase Equilibria, 214(1), 87-100. doi:10.1016/S0378-3812(03)00317-0https://doi.org/10.1016/S0378-3812(03)00317-0metadata only accessinfo:eu-repo/semantics/openAccessreponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãoinstacron:RCAAP2023-12-15T09:55:27Zoai:ubibliorum.ubi.pt:10400.6/12317Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-20T00:51:57.255112Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãofalse |
dc.title.none.fl_str_mv |
Activity coefficients of sodium benzoate and potassium benzoate in water at 298.15 K |
title |
Activity coefficients of sodium benzoate and potassium benzoate in water at 298.15 K |
spellingShingle |
Activity coefficients of sodium benzoate and potassium benzoate in water at 298.15 K Mendonça, António Potassium benzoate Sodium benzoate Activity coefficients Pitzer model Guggenheim model |
title_short |
Activity coefficients of sodium benzoate and potassium benzoate in water at 298.15 K |
title_full |
Activity coefficients of sodium benzoate and potassium benzoate in water at 298.15 K |
title_fullStr |
Activity coefficients of sodium benzoate and potassium benzoate in water at 298.15 K |
title_full_unstemmed |
Activity coefficients of sodium benzoate and potassium benzoate in water at 298.15 K |
title_sort |
Activity coefficients of sodium benzoate and potassium benzoate in water at 298.15 K |
author |
Mendonça, António |
author_facet |
Mendonça, António Cardoso, Cristina M. P. Juusola, Pekka M. |
author_role |
author |
author2 |
Cardoso, Cristina M. P. Juusola, Pekka M. |
author2_role |
author author |
dc.contributor.none.fl_str_mv |
uBibliorum |
dc.contributor.author.fl_str_mv |
Mendonça, António Cardoso, Cristina M. P. Juusola, Pekka M. |
dc.subject.por.fl_str_mv |
Potassium benzoate Sodium benzoate Activity coefficients Pitzer model Guggenheim model |
topic |
Potassium benzoate Sodium benzoate Activity coefficients Pitzer model Guggenheim model |
description |
Industrial additives, like sodium benzoate and potassium benzoate, are used in low concentrations in aqueous solutions. However, in general, the ionic strength of the aqueous media is high. The Pitzer model allows the determination of activity coefficients in aqueous media. In this work, Pitzer parameters for sodium benzoate were recalculated (β(0)=0.162 mol−1 kg and β(1)=0.38 mol−1 kg) and Pitzer parameters for potassium benzoate were determined (β(0)=0.157 mol−1 kg and β(1)=0.27 mol−1 kg) from cell potential difference (cpd) measurements on galvanic cells without liquid junction. From these values, activity coefficients of potassium benzoate in water and in aqueous potassium chloride solutions were calculated by the Pitzer model. The activity coefficients were also calculated by modified Guggenheim equations with parameters obtained in this work and the results of the two models were compared. |
publishDate |
2003 |
dc.date.none.fl_str_mv |
2003 2003-01-01T00:00:00Z 2022-08-24T16:03:54Z |
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://hdl.handle.net/10400.6/12317 |
url |
http://hdl.handle.net/10400.6/12317 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
De Mendonça, A. J. G., Cardoso, C. M. P., & Juusola, P. M. (2003). Activity coefficients of sodium benzoate and potassium benzoate in water at 298.15 K. Fluid Phase Equilibria, 214(1), 87-100. doi:10.1016/S0378-3812(03)00317-0 https://doi.org/10.1016/S0378-3812(03)00317-0 |
dc.rights.driver.fl_str_mv |
metadata only access info:eu-repo/semantics/openAccess |
rights_invalid_str_mv |
metadata only access |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
application/pdf |
dc.publisher.none.fl_str_mv |
Elsevier B.V. |
publisher.none.fl_str_mv |
Elsevier B.V. |
dc.source.none.fl_str_mv |
reponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação instacron:RCAAP |
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Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação |
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RCAAP |
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RCAAP |
reponame_str |
Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
collection |
Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
repository.name.fl_str_mv |
Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação |
repository.mail.fl_str_mv |
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1799136408057675776 |