Natural pH indicators: Using paper or solution?

dc.creatorTerci, DBL
dc.creatorRossi, AV
dc.date2002
dc.dateJUL-AUG
dc.date2014-11-14T15:00:53Z
dc.date2015-11-26T17:15:27Z
dc.date2014-11-14T15:00:53Z
dc.date2015-11-26T17:15:27Z
dc.date.accessioned2018-03-29T00:03:42Z
dc.date.available2018-03-29T00:03:42Z
dc.identifierQuimica Nova. Soc Brasileira Quimica, v. 25, n. 4, n. 684, n. 688, 2002.
dc.identifier0100-4042
dc.identifierWOS:000177050900026
dc.identifier10.1590/S0100-40422002000400026
dc.identifierhttp://www.repositorio.unicamp.br/jspui/handle/REPOSIP/63436
dc.identifierhttp://www.repositorio.unicamp.br/handle/REPOSIP/63436
dc.identifierhttp://repositorio.unicamp.br/jspui/handle/REPOSIP/63436
dc.identifier.urihttp://repositorioslatinoamericanos.uchile.cl/handle/2250/1282051
dc.descriptionNATURAL pH INDICATORS: USING PAPER OR SOLUTION? In this work. the fruit extracts of Morus nigra - mulberry, Szygium cuminii - jambolao, Vitis vinifera - 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.
dc.description25
dc.description4
dc.description684
dc.description688
dc.languagept
dc.publisherSoc Brasileira Quimica
dc.publisherSao Paulo
dc.publisherBrasil
dc.relationQuimica Nova
dc.relationQuim. Nova
dc.rightsaberto
dc.sourceWeb of Science
dc.subjectnatural pH indicator
dc.subjectdidactic experiment
dc.subjectacid-base equilibrium
dc.subjectAnthocyanins
dc.subjectPigments
dc.titleNatural pH indicators: Using paper or solution?
dc.typeArtículos de revistas


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