Estudi cromàtic d'indicadors en solvents no aquosos. Aplicacions volumètriques
This paper is a contribution to assess the present state of chemical and chromatic studies of chemical indicators both in aqueous and the mainnonaqueoussolvents. It deals with the theoretical approach and practical procedure to characterize the transition ranges,pH of maximum colour change,optimum c...
| Autores: | , , , , , |
|---|---|
| Formato: | artículo |
| Estado: | Versión publicada |
| Fecha de publicación: | 1987 |
| País: | España |
| Recursos: | Varias* (Consorci de Biblioteques Universitáries de Catalunya, Centre de Serveis Científics i Acadèmics de Catalunya) |
| Repositorio: | Recercat. Dipósit de la Recerca de Catalunya |
| OAI Identifier: | oai:recercat.cat:2445/178436 |
| Acesso em linha: | https://hdl.handle.net/2445/178436 |
| Access Level: | acceso abierto |
| Palavra-chave: | Dissolvents no aquosos Química analítica Nonaqueous solvents Analytical chemistry |
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Estudi cromàtic d'indicadors en solvents no aquosos. Aplicacions volumètriquesBarbosa Torralbo, JoséBarrón, DoloresBosch, ElisabethRàfols Llach, ClaraRosés Pascual, MartíSanz Nebot, María VictoriaDissolvents no aquososQuímica analíticaNonaqueous solventsAnalytical chemistryThis paper is a contribution to assess the present state of chemical and chromatic studies of chemical indicators both in aqueous and the mainnonaqueoussolvents. It deals with the theoretical approach and practical procedure to characterize the transition ranges,pH of maximum colour change,optimum concentration for the titration and quality of colour change,as well as the determination of pKa values.Equations defining the transition straight line in complementary chromaticitydiagram and conditions defining the bests creened indicator to be prepared from a given pure acid-base indicator and dyes are also given. The developped parameters and indexes have been applied to the study of indicators in tert-buty land isopropyl alcohols,acetonitrile and anhydrous acetic acid,which are the mainly used solvents to titrate acids and bases or their mixtures.In each of them, aseries of commercial indicators has been stablished that covers the whole useful acidity range.From it, it is possible to select the best indicator for the problemat hand.Institut d'Estudis Catalans2021202119872021info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersion15 p.application/pdfhttps://hdl.handle.net/2445/178436Articles publicats en revistes (Enginyeria Química i Química Analítica)reponame:Recercat. Dipósit de la Recerca de Catalunyainstname:Varias* (Consorci de Biblioteques Universitáries de Catalunya, Centre de Serveis Científics i Acadèmics de Catalunya)CatalánReproducció del document publicat a:Butlletí de la Societat Catalana de Ciències, 1987, vol. 2, p. 61-75(c) Barbosa Torralbo, José et al., 1987info:eu-repo/semantics/openAccessoai:recercat.cat:2445/1784362026-05-29T05:05:01Z |
| dc.title.none.fl_str_mv |
Estudi cromàtic d'indicadors en solvents no aquosos. Aplicacions volumètriques |
| title |
Estudi cromàtic d'indicadors en solvents no aquosos. Aplicacions volumètriques |
| spellingShingle |
Estudi cromàtic d'indicadors en solvents no aquosos. Aplicacions volumètriques Barbosa Torralbo, José Dissolvents no aquosos Química analítica Nonaqueous solvents Analytical chemistry |
| title_short |
Estudi cromàtic d'indicadors en solvents no aquosos. Aplicacions volumètriques |
| title_full |
Estudi cromàtic d'indicadors en solvents no aquosos. Aplicacions volumètriques |
| title_fullStr |
Estudi cromàtic d'indicadors en solvents no aquosos. Aplicacions volumètriques |
| title_full_unstemmed |
Estudi cromàtic d'indicadors en solvents no aquosos. Aplicacions volumètriques |
| title_sort |
Estudi cromàtic d'indicadors en solvents no aquosos. Aplicacions volumètriques |
| dc.creator.none.fl_str_mv |
Barbosa Torralbo, José Barrón, Dolores Bosch, Elisabeth Ràfols Llach, Clara Rosés Pascual, Martí Sanz Nebot, María Victoria |
| author |
Barbosa Torralbo, José |
| author_facet |
Barbosa Torralbo, José Barrón, Dolores Bosch, Elisabeth Ràfols Llach, Clara Rosés Pascual, Martí Sanz Nebot, María Victoria |
| author_role |
author |
| author2 |
Barrón, Dolores Bosch, Elisabeth Ràfols Llach, Clara Rosés Pascual, Martí Sanz Nebot, María Victoria |
| author2_role |
author author author author author |
| dc.subject.none.fl_str_mv |
Dissolvents no aquosos Química analítica Nonaqueous solvents Analytical chemistry |
| topic |
Dissolvents no aquosos Química analítica Nonaqueous solvents Analytical chemistry |
| description |
This paper is a contribution to assess the present state of chemical and chromatic studies of chemical indicators both in aqueous and the mainnonaqueoussolvents. It deals with the theoretical approach and practical procedure to characterize the transition ranges,pH of maximum colour change,optimum concentration for the titration and quality of colour change,as well as the determination of pKa values.Equations defining the transition straight line in complementary chromaticitydiagram and conditions defining the bests creened indicator to be prepared from a given pure acid-base indicator and dyes are also given. The developped parameters and indexes have been applied to the study of indicators in tert-buty land isopropyl alcohols,acetonitrile and anhydrous acetic acid,which are the mainly used solvents to titrate acids and bases or their mixtures.In each of them, aseries of commercial indicators has been stablished that covers the whole useful acidity range.From it, it is possible to select the best indicator for the problemat hand. |
| publishDate |
1987 |
| dc.date.none.fl_str_mv |
1987 2021 2021 2021 |
| dc.type.none.fl_str_mv |
info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion |
| format |
article |
| status_str |
publishedVersion |
| dc.identifier.none.fl_str_mv |
https://hdl.handle.net/2445/178436 |
| url |
https://hdl.handle.net/2445/178436 |
| dc.language.none.fl_str_mv |
Catalán |
| language_invalid_str_mv |
Catalán |
| dc.relation.none.fl_str_mv |
Reproducció del document publicat a: Butlletí de la Societat Catalana de Ciències, 1987, vol. 2, p. 61-75 |
| dc.rights.none.fl_str_mv |
(c) Barbosa Torralbo, José et al., 1987 info:eu-repo/semantics/openAccess |
| rights_invalid_str_mv |
(c) Barbosa Torralbo, José et al., 1987 |
| eu_rights_str_mv |
openAccess |
| dc.format.none.fl_str_mv |
15 p. application/pdf |
| dc.publisher.none.fl_str_mv |
Institut d'Estudis Catalans |
| publisher.none.fl_str_mv |
Institut d'Estudis Catalans |
| dc.source.none.fl_str_mv |
Articles publicats en revistes (Enginyeria Química i Química Analítica) reponame:Recercat. Dipósit de la Recerca de Catalunya instname:Varias* (Consorci de Biblioteques Universitáries de Catalunya, Centre de Serveis Científics i Acadèmics de Catalunya) |
| instname_str |
Varias* (Consorci de Biblioteques Universitáries de Catalunya, Centre de Serveis Científics i Acadèmics de Catalunya) |
| reponame_str |
Recercat. Dipósit de la Recerca de Catalunya |
| collection |
Recercat. Dipósit de la Recerca de Catalunya |
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1869421112521129984 |
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15.812429 |