Electrometric investigations on formation of lanthanum molybdates as a function of pH

Detalhes bibliográficos
Autor(a) principal: Prasad, S.
Data de Publicação: 2004
Outros Autores: Leite, V. D., Santana, RAC de, Brito, J. B.
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Institucional da UNESP
Texto Completo: http://hdl.handle.net/11449/194628
Resumo: The precise nature of the reaction between lanthanum nitrate and sodium molybdate at specific pH levels 7.6, 5.5 and 4.1 has been studied by means of electrometric techniques involving potentiometric and conductometric titrations, in aqueous and alcoholic media using each reagent as titrant. Well-defined breaks and inflections in the titration curves provide cogent evidence for formation and precipitation of lanthanum normal-La2O3.3MoO(3), para- La2O3.7MoO(3) and octa-2 La2O3.24MoO(3) molybdates in the vicinity of pH 5.9, 4.8 and 4.2, respectively. Analytical investigations of the precipitates of lanthanum molybdates have also been carried out, which substantiate the results of the electrometric study.
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spelling Electrometric investigations on formation of lanthanum molybdates as a function of pHmolybdateslanthanum molybdateselectrometryThe precise nature of the reaction between lanthanum nitrate and sodium molybdate at specific pH levels 7.6, 5.5 and 4.1 has been studied by means of electrometric techniques involving potentiometric and conductometric titrations, in aqueous and alcoholic media using each reagent as titrant. Well-defined breaks and inflections in the titration curves provide cogent evidence for formation and precipitation of lanthanum normal-La2O3.3MoO(3), para- La2O3.7MoO(3) and octa-2 La2O3.24MoO(3) molybdates in the vicinity of pH 5.9, 4.8 and 4.2, respectively. Analytical investigations of the precipitates of lanthanum molybdates have also been carried out, which substantiate the results of the electrometric study.Univ Fed Campina Grande, Ctr Ciencias & Tecnol, Dept Engn Quim, BR-58109970 Campina Grande, PB, BrazilUniv Estadual Paulista, CCT, Dept Quuim, BR-58100000 Campina Grande, PB, BrazilUniv Estadual Paulista, CCT, Dept Quuim, BR-58100000 Campina Grande, PB, BrazilSoc Brasileira QuimicaUniv Fed Campina GrandeUniversidade Estadual Paulista (Unesp)Prasad, S.Leite, V. D.Santana, RAC deBrito, J. B.2020-12-10T16:32:20Z2020-12-10T16:32:20Z2004-03-01info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/article246-252Journal Of The Brazilian Chemical Society. Sao Paulo: Soc Brasileira Quimica, v. 15, n. 2, p. 246-252, 2004.0103-5053http://hdl.handle.net/11449/194628WOS:000221603000013Web of Sciencereponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengJournal Of The Brazilian Chemical Societyinfo:eu-repo/semantics/openAccess2021-10-22T19:03:41Zoai:repositorio.unesp.br:11449/194628Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestrepositoriounesp@unesp.bropendoar:29462021-10-22T19:03:41Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false
dc.title.none.fl_str_mv Electrometric investigations on formation of lanthanum molybdates as a function of pH
title Electrometric investigations on formation of lanthanum molybdates as a function of pH
spellingShingle Electrometric investigations on formation of lanthanum molybdates as a function of pH
Prasad, S.
molybdates
lanthanum molybdates
electrometry
title_short Electrometric investigations on formation of lanthanum molybdates as a function of pH
title_full Electrometric investigations on formation of lanthanum molybdates as a function of pH
title_fullStr Electrometric investigations on formation of lanthanum molybdates as a function of pH
title_full_unstemmed Electrometric investigations on formation of lanthanum molybdates as a function of pH
title_sort Electrometric investigations on formation of lanthanum molybdates as a function of pH
author Prasad, S.
author_facet Prasad, S.
Leite, V. D.
Santana, RAC de
Brito, J. B.
author_role author
author2 Leite, V. D.
Santana, RAC de
Brito, J. B.
author2_role author
author
author
dc.contributor.none.fl_str_mv Univ Fed Campina Grande
Universidade Estadual Paulista (Unesp)
dc.contributor.author.fl_str_mv Prasad, S.
Leite, V. D.
Santana, RAC de
Brito, J. B.
dc.subject.por.fl_str_mv molybdates
lanthanum molybdates
electrometry
topic molybdates
lanthanum molybdates
electrometry
description The precise nature of the reaction between lanthanum nitrate and sodium molybdate at specific pH levels 7.6, 5.5 and 4.1 has been studied by means of electrometric techniques involving potentiometric and conductometric titrations, in aqueous and alcoholic media using each reagent as titrant. Well-defined breaks and inflections in the titration curves provide cogent evidence for formation and precipitation of lanthanum normal-La2O3.3MoO(3), para- La2O3.7MoO(3) and octa-2 La2O3.24MoO(3) molybdates in the vicinity of pH 5.9, 4.8 and 4.2, respectively. Analytical investigations of the precipitates of lanthanum molybdates have also been carried out, which substantiate the results of the electrometric study.
publishDate 2004
dc.date.none.fl_str_mv 2004-03-01
2020-12-10T16:32:20Z
2020-12-10T16:32:20Z
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 Journal Of The Brazilian Chemical Society. Sao Paulo: Soc Brasileira Quimica, v. 15, n. 2, p. 246-252, 2004.
0103-5053
http://hdl.handle.net/11449/194628
WOS:000221603000013
identifier_str_mv Journal Of The Brazilian Chemical Society. Sao Paulo: Soc Brasileira Quimica, v. 15, n. 2, p. 246-252, 2004.
0103-5053
WOS:000221603000013
url http://hdl.handle.net/11449/194628
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv Journal Of The Brazilian Chemical Society
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv 246-252
dc.publisher.none.fl_str_mv Soc Brasileira Quimica
publisher.none.fl_str_mv Soc Brasileira Quimica
dc.source.none.fl_str_mv Web of Science
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 repositoriounesp@unesp.br
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