Indicadores naturais de pH: usar papel ou solução?

Detalhes bibliográficos
Autor(a) principal: Terci,Daniela Brotto Lopes
Data de Publicação: 2002
Outros Autores: Rossi,Adriana Vitorino
Tipo de documento: Artigo
Idioma: por
Título da fonte: Química Nova (Online)
Texto Completo: http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0100-40422002000400026
Resumo: In this work, the fruit extracts of Morus nigra - mulberry, Syzygium cuminii - jambolão, Vitis vinifera <FONT FACE=Symbol>¾</FONT> grape, Myrciaria cauliflora - jabuticaba are suggested as pH indicators in the form of either solutions or paper. The pH indicator solutions were prepared by soaking the fruits or their peels in ethanol 1:3 (m/V) for 24 h, followed by simple filtration. The pH indicator papers were prepared by imersion of the qualitative filter paper strips in the pH indicator solutions. The different pH leads to color changes in the indicator solutions or papers and it can be used for teaching elementary chemistry concepts.
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spelling Indicadores naturais de pH: usar papel ou solução?natural pH indicatordidactic experimentacid-base equilibriumIn this work, the fruit extracts of Morus nigra - mulberry, Syzygium cuminii - jambolão, Vitis vinifera <FONT FACE=Symbol>¾</FONT> grape, Myrciaria cauliflora - jabuticaba are suggested as pH indicators in the form of either solutions or paper. The pH indicator solutions were prepared by soaking the fruits or their peels in ethanol 1:3 (m/V) for 24 h, followed by simple filtration. The pH indicator papers were prepared by imersion of the qualitative filter paper strips in the pH indicator solutions. The different pH leads to color changes in the indicator solutions or papers and it can be used for teaching elementary chemistry concepts.Sociedade Brasileira de Química2002-07-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S0100-40422002000400026Química Nova v.25 n.4 2002reponame:Química Nova (Online)instname:Sociedade Brasileira de Química (SBQ)instacron:SBQ10.1590/S0100-40422002000400026info:eu-repo/semantics/openAccessTerci,Daniela Brotto LopesRossi,Adriana Vitorinopor2002-08-26T00:00:00Zoai:scielo:S0100-40422002000400026Revistahttps://www.scielo.br/j/qn/ONGhttps://old.scielo.br/oai/scielo-oai.phpquimicanova@sbq.org.br1678-70640100-4042opendoar:2002-08-26T00:00Química Nova (Online) - Sociedade Brasileira de Química (SBQ)false
dc.title.none.fl_str_mv Indicadores naturais de pH: usar papel ou solução?
title Indicadores naturais de pH: usar papel ou solução?
spellingShingle Indicadores naturais de pH: usar papel ou solução?
Terci,Daniela Brotto Lopes
natural pH indicator
didactic experiment
acid-base equilibrium
title_short Indicadores naturais de pH: usar papel ou solução?
title_full Indicadores naturais de pH: usar papel ou solução?
title_fullStr Indicadores naturais de pH: usar papel ou solução?
title_full_unstemmed Indicadores naturais de pH: usar papel ou solução?
title_sort Indicadores naturais de pH: usar papel ou solução?
author Terci,Daniela Brotto Lopes
author_facet Terci,Daniela Brotto Lopes
Rossi,Adriana Vitorino
author_role author
author2 Rossi,Adriana Vitorino
author2_role author
dc.contributor.author.fl_str_mv Terci,Daniela Brotto Lopes
Rossi,Adriana Vitorino
dc.subject.por.fl_str_mv natural pH indicator
didactic experiment
acid-base equilibrium
topic natural pH indicator
didactic experiment
acid-base equilibrium
description In this work, the fruit extracts of Morus nigra - mulberry, Syzygium cuminii - jambolão, Vitis vinifera <FONT FACE=Symbol>¾</FONT> grape, Myrciaria cauliflora - jabuticaba are suggested as pH indicators in the form of either solutions or paper. The pH indicator solutions were prepared by soaking the fruits or their peels in ethanol 1:3 (m/V) for 24 h, followed by simple filtration. The pH indicator papers were prepared by imersion of the qualitative filter paper strips in the pH indicator solutions. The different pH leads to color changes in the indicator solutions or papers and it can be used for teaching elementary chemistry concepts.
publishDate 2002
dc.date.none.fl_str_mv 2002-07-01
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=S0100-40422002000400026
url http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0100-40422002000400026
dc.language.iso.fl_str_mv por
language por
dc.relation.none.fl_str_mv 10.1590/S0100-40422002000400026
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.25 n.4 2002
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
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