Another Twist of the Foam: An Effective Test Considering a Quantitative Approach to "elephant's Toothpaste"

Autores
Hernando, Franco; Laperuta, Santiago; Kuijl, Jeanine Van; Laurin, Nihuel; Sacks, Federico; Ciolino, Andrés Eduardo
Año de publicación
2017
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
In this work, a new quantitative look at the well-known "Elephant´s Toothpaste" demonstration is proposed. The catalyzed decomposition of H2O2 by iodide ion (I-) is employed to produce foam in a controlled fashion. The time at which the foam reached a known volume in a conventional 500 mL measuring cylinder was registered. A straightforward correlation was observed between foam production and v/V% in a given range. A correlation plot was obtained, and the concentration of unknown solutions "A" and "B" was then estimated from it. This simple and effective laboratory activity is proposed as a learning activity for comparing and analyzing results from both this quantitative approach and titration method reported by scientific literature.
Fil: Hernando, Franco. Universidad Nacional del Sur. Departamento de Ingeniería Química; Argentina
Fil: Laperuta, Santiago. Universidad Nacional del Sur. Departamento de Ingeniería Química; Argentina
Fil: Kuijl, Jeanine Van. Universidad Nacional del Sur. Departamento de Ingeniería Química; Argentina
Fil: Laurin, Nihuel. Universidad Nacional del Sur. Departamento de Ingeniería Química; Argentina
Fil: Sacks, Federico. Universidad Nacional del Sur. Departamento de Ingeniería Química; Argentina
Fil: Ciolino, Andrés Eduardo. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Universidad Nacional del Sur. Departamento de Ingeniería Química; Argentina
Materia
Hands-On Learning/Manipulatives
High School/Introductory Chemistry
Laboratory Instruction
Quantitative Analysis
Nivel de accesibilidad
acceso abierto
Condiciones de uso
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
Repositorio
CONICET Digital (CONICET)
Institución
Consejo Nacional de Investigaciones Científicas y Técnicas
OAI Identificador
oai:ri.conicet.gov.ar:11336/43230
Acceder
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repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling Another Twist of the Foam: An Effective Test Considering a Quantitative Approach to "elephant's Toothpaste"Hernando, FrancoLaperuta, SantiagoKuijl, Jeanine VanLaurin, NihuelSacks, FedericoCiolino, Andrés EduardoHands-On Learning/ManipulativesHigh School/Introductory ChemistryLaboratory InstructionQuantitative Analysishttps://purl.org/becyt/ford/2.4https://purl.org/becyt/ford/2In this work, a new quantitative look at the well-known "Elephant´s Toothpaste" demonstration is proposed. The catalyzed decomposition of H2O2 by iodide ion (I-) is employed to produce foam in a controlled fashion. The time at which the foam reached a known volume in a conventional 500 mL measuring cylinder was registered. A straightforward correlation was observed between foam production and v/V% in a given range. A correlation plot was obtained, and the concentration of unknown solutions "A" and "B" was then estimated from it. This simple and effective laboratory activity is proposed as a learning activity for comparing and analyzing results from both this quantitative approach and titration method reported by scientific literature.Fil: Hernando, Franco. Universidad Nacional del Sur. Departamento de Ingeniería Química; ArgentinaFil: Laperuta, Santiago. Universidad Nacional del Sur. Departamento de Ingeniería Química; ArgentinaFil: Kuijl, Jeanine Van. Universidad Nacional del Sur. Departamento de Ingeniería Química; ArgentinaFil: Laurin, Nihuel. Universidad Nacional del Sur. Departamento de Ingeniería Química; ArgentinaFil: Sacks, Federico. Universidad Nacional del Sur. Departamento de Ingeniería Química; ArgentinaFil: Ciolino, Andrés Eduardo. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Universidad Nacional del Sur. Departamento de Ingeniería Química; ArgentinaAmerican Chemical Society2017-07info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/43230Hernando, Franco; Laperuta, Santiago; Kuijl, Jeanine Van; Laurin, Nihuel; Sacks, Federico; et al.; Another Twist of the Foam: An Effective Test Considering a Quantitative Approach to "elephant's Toothpaste"; American Chemical Society; Journal Of Chemical Education; 94; 7; 7-2017; 907-9100021-9584CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/doi/10.1021/acs.jchemed.7b00040info:eu-repo/semantics/altIdentifier/url/https://pubs.acs.org/doi/10.1021/acs.jchemed.7b00040info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-10-15T14:25:50Zoai:ri.conicet.gov.ar:11336/43230instacron:CONICETInstitucionalhttp://ri.conicet.gov.ar/Organismo científico-tecnológicoNo correspondehttp://ri.conicet.gov.ar/oai/requestdasensio@conicet.gov.ar; lcarlino@conicet.gov.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:34982025-10-15 14:25:50.309CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Another Twist of the Foam: An Effective Test Considering a Quantitative Approach to "elephant's Toothpaste"
title Another Twist of the Foam: An Effective Test Considering a Quantitative Approach to "elephant's Toothpaste"
spellingShingle Another Twist of the Foam: An Effective Test Considering a Quantitative Approach to "elephant's Toothpaste"
Hernando, Franco
Hands-On Learning/Manipulatives
High School/Introductory Chemistry
Laboratory Instruction
Quantitative Analysis
title_short Another Twist of the Foam: An Effective Test Considering a Quantitative Approach to "elephant's Toothpaste"
title_full Another Twist of the Foam: An Effective Test Considering a Quantitative Approach to "elephant's Toothpaste"
title_fullStr Another Twist of the Foam: An Effective Test Considering a Quantitative Approach to "elephant's Toothpaste"
title_full_unstemmed Another Twist of the Foam: An Effective Test Considering a Quantitative Approach to "elephant's Toothpaste"
title_sort Another Twist of the Foam: An Effective Test Considering a Quantitative Approach to "elephant's Toothpaste"
dc.creator.none.fl_str_mv Hernando, Franco
Laperuta, Santiago
Kuijl, Jeanine Van
Laurin, Nihuel
Sacks, Federico
Ciolino, Andrés Eduardo
author Hernando, Franco
author_facet Hernando, Franco
Laperuta, Santiago
Kuijl, Jeanine Van
Laurin, Nihuel
Sacks, Federico
Ciolino, Andrés Eduardo
author_role author
author2 Laperuta, Santiago
Kuijl, Jeanine Van
Laurin, Nihuel
Sacks, Federico
Ciolino, Andrés Eduardo
author2_role author
author
author
author
author
dc.subject.none.fl_str_mv Hands-On Learning/Manipulatives
High School/Introductory Chemistry
Laboratory Instruction
Quantitative Analysis
topic Hands-On Learning/Manipulatives
High School/Introductory Chemistry
Laboratory Instruction
Quantitative Analysis
purl_subject.fl_str_mv https://purl.org/becyt/ford/2.4
https://purl.org/becyt/ford/2
dc.description.none.fl_txt_mv In this work, a new quantitative look at the well-known "Elephant´s Toothpaste" demonstration is proposed. The catalyzed decomposition of H2O2 by iodide ion (I-) is employed to produce foam in a controlled fashion. The time at which the foam reached a known volume in a conventional 500 mL measuring cylinder was registered. A straightforward correlation was observed between foam production and v/V% in a given range. A correlation plot was obtained, and the concentration of unknown solutions "A" and "B" was then estimated from it. This simple and effective laboratory activity is proposed as a learning activity for comparing and analyzing results from both this quantitative approach and titration method reported by scientific literature.
Fil: Hernando, Franco. Universidad Nacional del Sur. Departamento de Ingeniería Química; Argentina
Fil: Laperuta, Santiago. Universidad Nacional del Sur. Departamento de Ingeniería Química; Argentina
Fil: Kuijl, Jeanine Van. Universidad Nacional del Sur. Departamento de Ingeniería Química; Argentina
Fil: Laurin, Nihuel. Universidad Nacional del Sur. Departamento de Ingeniería Química; Argentina
Fil: Sacks, Federico. Universidad Nacional del Sur. Departamento de Ingeniería Química; Argentina
Fil: Ciolino, Andrés Eduardo. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Universidad Nacional del Sur. Departamento de Ingeniería Química; Argentina
description In this work, a new quantitative look at the well-known "Elephant´s Toothpaste" demonstration is proposed. The catalyzed decomposition of H2O2 by iodide ion (I-) is employed to produce foam in a controlled fashion. The time at which the foam reached a known volume in a conventional 500 mL measuring cylinder was registered. A straightforward correlation was observed between foam production and v/V% in a given range. A correlation plot was obtained, and the concentration of unknown solutions "A" and "B" was then estimated from it. This simple and effective laboratory activity is proposed as a learning activity for comparing and analyzing results from both this quantitative approach and titration method reported by scientific literature.
publishDate 2017
dc.date.none.fl_str_mv 2017-07
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
http://purl.org/coar/resource_type/c_6501
info:ar-repo/semantics/articulo
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/11336/43230
Hernando, Franco; Laperuta, Santiago; Kuijl, Jeanine Van; Laurin, Nihuel; Sacks, Federico; et al.; Another Twist of the Foam: An Effective Test Considering a Quantitative Approach to "elephant's Toothpaste"; American Chemical Society; Journal Of Chemical Education; 94; 7; 7-2017; 907-910
0021-9584
CONICET Digital
CONICET
url http://hdl.handle.net/11336/43230
identifier_str_mv Hernando, Franco; Laperuta, Santiago; Kuijl, Jeanine Van; Laurin, Nihuel; Sacks, Federico; et al.; Another Twist of the Foam: An Effective Test Considering a Quantitative Approach to "elephant's Toothpaste"; American Chemical Society; Journal Of Chemical Education; 94; 7; 7-2017; 907-910
0021-9584
CONICET Digital
CONICET
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/doi/10.1021/acs.jchemed.7b00040
info:eu-repo/semantics/altIdentifier/url/https://pubs.acs.org/doi/10.1021/acs.jchemed.7b00040
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
eu_rights_str_mv openAccess
rights_invalid_str_mv https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.format.none.fl_str_mv application/pdf
application/pdf
dc.publisher.none.fl_str_mv American Chemical Society
publisher.none.fl_str_mv American Chemical Society
dc.source.none.fl_str_mv reponame:CONICET Digital (CONICET)
instname:Consejo Nacional de Investigaciones Científicas y Técnicas
reponame_str CONICET Digital (CONICET)
collection CONICET Digital (CONICET)
instname_str Consejo Nacional de Investigaciones Científicas y Técnicas
repository.name.fl_str_mv CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicas
repository.mail.fl_str_mv dasensio@conicet.gov.ar; lcarlino@conicet.gov.ar
_version_ 1846082697453109248
score 13.22299

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