De Svante Arrhenius ao peagâmetro digital: 100 anos de medida de acidez
Autor(a) principal: | |
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Data de Publicação: | 2007 |
Outros Autores: | |
Tipo de documento: | Artigo |
Idioma: | por |
Título da fonte: | Química Nova (Online) |
Texto Completo: | http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0100-40422007000100038 |
Resumo: | This work describes the establishment of the concept of pH and the evolution of its measurement. The origin of the pH definition can be found in the development of the chemistry of aqueous solutions during the XIXth century. The electrolytic dissociation theory by Svante Arrhenius played a central role. After the proposal of the pH scale by Sörensen, many years were necessary for the acceptance of this new parameter among chemists in general. Its importance was first recognized in biochemistry and related areas. Twenty years after, its importance had been recognized in many industrial and laboratorial practices. The previous methods were based on colorimetric and electrometric methods, but both suffered from many problems. Acceptance of pH in Chemistry was only possible after the development of experimental trustable measurements. The invention of the pH meter was the primordial step. |
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De Svante Arrhenius ao peagâmetro digital: 100 anos de medida de acidezpHpH meteracidity measurementThis work describes the establishment of the concept of pH and the evolution of its measurement. The origin of the pH definition can be found in the development of the chemistry of aqueous solutions during the XIXth century. The electrolytic dissociation theory by Svante Arrhenius played a central role. After the proposal of the pH scale by Sörensen, many years were necessary for the acceptance of this new parameter among chemists in general. Its importance was first recognized in biochemistry and related areas. Twenty years after, its importance had been recognized in many industrial and laboratorial practices. The previous methods were based on colorimetric and electrometric methods, but both suffered from many problems. Acceptance of pH in Chemistry was only possible after the development of experimental trustable measurements. The invention of the pH meter was the primordial step.Sociedade Brasileira de Química2007-02-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S0100-40422007000100038Química Nova v.30 n.1 2007reponame:Química Nova (Online)instname:Sociedade Brasileira de Química (SBQ)instacron:SBQ10.1590/S0100-40422007000100038info:eu-repo/semantics/openAccessGama,Michelle da SilvaAfonso,Júlio Carlospor2007-02-23T00:00:00Zoai:scielo:S0100-40422007000100038Revistahttps://www.scielo.br/j/qn/ONGhttps://old.scielo.br/oai/scielo-oai.phpquimicanova@sbq.org.br1678-70640100-4042opendoar:2007-02-23T00:00Química Nova (Online) - Sociedade Brasileira de Química (SBQ)false |
dc.title.none.fl_str_mv |
De Svante Arrhenius ao peagâmetro digital: 100 anos de medida de acidez |
title |
De Svante Arrhenius ao peagâmetro digital: 100 anos de medida de acidez |
spellingShingle |
De Svante Arrhenius ao peagâmetro digital: 100 anos de medida de acidez Gama,Michelle da Silva pH pH meter acidity measurement |
title_short |
De Svante Arrhenius ao peagâmetro digital: 100 anos de medida de acidez |
title_full |
De Svante Arrhenius ao peagâmetro digital: 100 anos de medida de acidez |
title_fullStr |
De Svante Arrhenius ao peagâmetro digital: 100 anos de medida de acidez |
title_full_unstemmed |
De Svante Arrhenius ao peagâmetro digital: 100 anos de medida de acidez |
title_sort |
De Svante Arrhenius ao peagâmetro digital: 100 anos de medida de acidez |
author |
Gama,Michelle da Silva |
author_facet |
Gama,Michelle da Silva Afonso,Júlio Carlos |
author_role |
author |
author2 |
Afonso,Júlio Carlos |
author2_role |
author |
dc.contributor.author.fl_str_mv |
Gama,Michelle da Silva Afonso,Júlio Carlos |
dc.subject.por.fl_str_mv |
pH pH meter acidity measurement |
topic |
pH pH meter acidity measurement |
description |
This work describes the establishment of the concept of pH and the evolution of its measurement. The origin of the pH definition can be found in the development of the chemistry of aqueous solutions during the XIXth century. The electrolytic dissociation theory by Svante Arrhenius played a central role. After the proposal of the pH scale by Sörensen, many years were necessary for the acceptance of this new parameter among chemists in general. Its importance was first recognized in biochemistry and related areas. Twenty years after, its importance had been recognized in many industrial and laboratorial practices. The previous methods were based on colorimetric and electrometric methods, but both suffered from many problems. Acceptance of pH in Chemistry was only possible after the development of experimental trustable measurements. The invention of the pH meter was the primordial step. |
publishDate |
2007 |
dc.date.none.fl_str_mv |
2007-02-01 |
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=S0100-40422007000100038 |
url |
http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0100-40422007000100038 |
dc.language.iso.fl_str_mv |
por |
language |
por |
dc.relation.none.fl_str_mv |
10.1590/S0100-40422007000100038 |
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 |
Química Nova v.30 n.1 2007 reponame:Química Nova (Online) instname:Sociedade Brasileira de Química (SBQ) instacron:SBQ |
instname_str |
Sociedade Brasileira de Química (SBQ) |
instacron_str |
SBQ |
institution |
SBQ |
reponame_str |
Química Nova (Online) |
collection |
Química Nova (Online) |
repository.name.fl_str_mv |
Química Nova (Online) - Sociedade Brasileira de Química (SBQ) |
repository.mail.fl_str_mv |
quimicanova@sbq.org.br |
_version_ |
1750318106061832192 |