Exploring chemical kinetics at home in times of pandemic: Following the bleaching of food dye allura red using a smartphone

Autores
Madriz Ruiz, Lorean Mercedes; Cabrerizo, Franco Martín; Vargas Balda, Ronald Eduardo
Año de publicación
2021
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
In this communication, a remote experimental activity in chemical kinetics is described, taking into account the quantification based on the optical sensor of a smartphone. The objective pursued herein is to equip students with the appropriate tools and strategies required to empirically determine the parameters of the rate law including reaction orders, rate constant (k), frequency factor (A), and activation energy (Ea). Typical results of the proposed protocol are shown and discussed in the framework of the bleaching reaction of food dye allura red (RD40) and hypochlorite, as a representative example. A graphical approach of the concentration vs time data measured under the experimental condition where [RD40] ≪ [ClO−] (isolation method) suggests a first-order kinetics with respect to the dye. In addition, the analysis of the pseudo-first-order constant (kobs) shows a firstorder relationship with respect to ClO−. In addition, using the two-point form of the Arrhenius equation, values of 3.22 × 107 s/M and 44.55 kJ/mol were obtained for A and Ea, respectively. Interestingly, all the kinetic parameters (reaction orders, k, A, and Ea) are on the same order of magnitude as those previously reported in the literature and acquired with more sophisticated and accurate equipment. This experience provides evidence that it is possible to proceed with remote experimental activities to deepen the collection and analysis of kinetic data during a pandemic.
Fil: Madriz Ruiz, Lorean Mercedes. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Instituto de Investigaciones Fisicoquímicas Teóricas y Aplicadas. Universidad Nacional de La Plata. Facultad de Ciencias Exactas. Instituto de Investigaciones Fisicoquímicas Teóricas y Aplicadas; Argentina
Fil: Cabrerizo, Franco Martín. Universidad Nacional de San Martin. Instituto Tecnologico de Chascomus. - Consejo Nacional de Investigaciones Cientificas y Tecnicas. Centro Cientifico Tecnologico Conicet - la Plata. Instituto Tecnologico de Chascomus.; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
Fil: Vargas Balda, Ronald Eduardo. Universidad Nacional de San Martin. Instituto Tecnologico de Chascomus. - Consejo Nacional de Investigaciones Cientificas y Tecnicas. Centro Cientifico Tecnologico Conicet - la Plata. Instituto Tecnologico de Chascomus.; Argentina
Materia
HANDS-ON LEARNING/MANIPULATIVES
SECOND-YEAR UNDERGRADUATE
PHYSICAL CHEMISTRY
KINETICS
RATE LAW
UV-VIS SPECTROSCOPY
COVID-19
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:11336/142743
Acceder
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oai_identifier_str oai:ri.conicet.gov.ar:11336/142743
network_acronym_str CONICETDig
repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling Exploring chemical kinetics at home in times of pandemic: Following the bleaching of food dye allura red using a smartphoneMadriz Ruiz, Lorean MercedesCabrerizo, Franco MartínVargas Balda, Ronald EduardoHANDS-ON LEARNING/MANIPULATIVESSECOND-YEAR UNDERGRADUATEPHYSICAL CHEMISTRYKINETICSRATE LAWUV-VIS SPECTROSCOPYCOVID-19https://purl.org/becyt/ford/1.4https://purl.org/becyt/ford/1In this communication, a remote experimental activity in chemical kinetics is described, taking into account the quantification based on the optical sensor of a smartphone. The objective pursued herein is to equip students with the appropriate tools and strategies required to empirically determine the parameters of the rate law including reaction orders, rate constant (k), frequency factor (A), and activation energy (Ea). Typical results of the proposed protocol are shown and discussed in the framework of the bleaching reaction of food dye allura red (RD40) and hypochlorite, as a representative example. A graphical approach of the concentration vs time data measured under the experimental condition where [RD40] ≪ [ClO−] (isolation method) suggests a first-order kinetics with respect to the dye. In addition, the analysis of the pseudo-first-order constant (kobs) shows a firstorder relationship with respect to ClO−. In addition, using the two-point form of the Arrhenius equation, values of 3.22 × 107 s/M and 44.55 kJ/mol were obtained for A and Ea, respectively. Interestingly, all the kinetic parameters (reaction orders, k, A, and Ea) are on the same order of magnitude as those previously reported in the literature and acquired with more sophisticated and accurate equipment. This experience provides evidence that it is possible to proceed with remote experimental activities to deepen the collection and analysis of kinetic data during a pandemic.Fil: Madriz Ruiz, Lorean Mercedes. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Instituto de Investigaciones Fisicoquímicas Teóricas y Aplicadas. Universidad Nacional de La Plata. Facultad de Ciencias Exactas. Instituto de Investigaciones Fisicoquímicas Teóricas y Aplicadas; ArgentinaFil: Cabrerizo, Franco Martín. Universidad Nacional de San Martin. Instituto Tecnologico de Chascomus. - Consejo Nacional de Investigaciones Cientificas y Tecnicas. Centro Cientifico Tecnologico Conicet - la Plata. Instituto Tecnologico de Chascomus.; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; ArgentinaFil: Vargas Balda, Ronald Eduardo. Universidad Nacional de San Martin. Instituto Tecnologico de Chascomus. - Consejo Nacional de Investigaciones Cientificas y Tecnicas. Centro Cientifico Tecnologico Conicet - la Plata. Instituto Tecnologico de Chascomus.; ArgentinaAmerican Chemical Society2021-05-12info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/142743Madriz Ruiz, Lorean Mercedes; Cabrerizo, Franco Martín; Vargas Balda, Ronald Eduardo; Exploring chemical kinetics at home in times of pandemic: Following the bleaching of food dye allura red using a smartphone; American Chemical Society; Journal Of Chemical Education; 98; 6; 12-5-2021; 2117-21210021-9584CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/url/https://pubs.acs.org/doi/10.1021/acs.jchemed.0c01427info:eu-repo/semantics/altIdentifier/doi/10.1021/acs.jchemed.0c01427info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-29T10:41:09Zoai:ri.conicet.gov.ar:11336/142743instacron: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:34982025-09-29 10:41:09.453CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Exploring chemical kinetics at home in times of pandemic: Following the bleaching of food dye allura red using a smartphone
title Exploring chemical kinetics at home in times of pandemic: Following the bleaching of food dye allura red using a smartphone
spellingShingle Exploring chemical kinetics at home in times of pandemic: Following the bleaching of food dye allura red using a smartphone
Madriz Ruiz, Lorean Mercedes
HANDS-ON LEARNING/MANIPULATIVES
SECOND-YEAR UNDERGRADUATE
PHYSICAL CHEMISTRY
KINETICS
RATE LAW
UV-VIS SPECTROSCOPY
COVID-19
title_short Exploring chemical kinetics at home in times of pandemic: Following the bleaching of food dye allura red using a smartphone
title_full Exploring chemical kinetics at home in times of pandemic: Following the bleaching of food dye allura red using a smartphone
title_fullStr Exploring chemical kinetics at home in times of pandemic: Following the bleaching of food dye allura red using a smartphone
title_full_unstemmed Exploring chemical kinetics at home in times of pandemic: Following the bleaching of food dye allura red using a smartphone
title_sort Exploring chemical kinetics at home in times of pandemic: Following the bleaching of food dye allura red using a smartphone
dc.creator.none.fl_str_mv Madriz Ruiz, Lorean Mercedes
Cabrerizo, Franco Martín
Vargas Balda, Ronald Eduardo
author Madriz Ruiz, Lorean Mercedes
author_facet Madriz Ruiz, Lorean Mercedes
Cabrerizo, Franco Martín
Vargas Balda, Ronald Eduardo
author_role author
author2 Cabrerizo, Franco Martín
Vargas Balda, Ronald Eduardo
author2_role author
author
dc.subject.none.fl_str_mv HANDS-ON LEARNING/MANIPULATIVES
SECOND-YEAR UNDERGRADUATE
PHYSICAL CHEMISTRY
KINETICS
RATE LAW
UV-VIS SPECTROSCOPY
COVID-19
topic HANDS-ON LEARNING/MANIPULATIVES
SECOND-YEAR UNDERGRADUATE
PHYSICAL CHEMISTRY
KINETICS
RATE LAW
UV-VIS SPECTROSCOPY
COVID-19
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.4
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv In this communication, a remote experimental activity in chemical kinetics is described, taking into account the quantification based on the optical sensor of a smartphone. The objective pursued herein is to equip students with the appropriate tools and strategies required to empirically determine the parameters of the rate law including reaction orders, rate constant (k), frequency factor (A), and activation energy (Ea). Typical results of the proposed protocol are shown and discussed in the framework of the bleaching reaction of food dye allura red (RD40) and hypochlorite, as a representative example. A graphical approach of the concentration vs time data measured under the experimental condition where [RD40] ≪ [ClO−] (isolation method) suggests a first-order kinetics with respect to the dye. In addition, the analysis of the pseudo-first-order constant (kobs) shows a firstorder relationship with respect to ClO−. In addition, using the two-point form of the Arrhenius equation, values of 3.22 × 107 s/M and 44.55 kJ/mol were obtained for A and Ea, respectively. Interestingly, all the kinetic parameters (reaction orders, k, A, and Ea) are on the same order of magnitude as those previously reported in the literature and acquired with more sophisticated and accurate equipment. This experience provides evidence that it is possible to proceed with remote experimental activities to deepen the collection and analysis of kinetic data during a pandemic.
Fil: Madriz Ruiz, Lorean Mercedes. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Instituto de Investigaciones Fisicoquímicas Teóricas y Aplicadas. Universidad Nacional de La Plata. Facultad de Ciencias Exactas. Instituto de Investigaciones Fisicoquímicas Teóricas y Aplicadas; Argentina
Fil: Cabrerizo, Franco Martín. Universidad Nacional de San Martin. Instituto Tecnologico de Chascomus. - Consejo Nacional de Investigaciones Cientificas y Tecnicas. Centro Cientifico Tecnologico Conicet - la Plata. Instituto Tecnologico de Chascomus.; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
Fil: Vargas Balda, Ronald Eduardo. Universidad Nacional de San Martin. Instituto Tecnologico de Chascomus. - Consejo Nacional de Investigaciones Cientificas y Tecnicas. Centro Cientifico Tecnologico Conicet - la Plata. Instituto Tecnologico de Chascomus.; Argentina
description In this communication, a remote experimental activity in chemical kinetics is described, taking into account the quantification based on the optical sensor of a smartphone. The objective pursued herein is to equip students with the appropriate tools and strategies required to empirically determine the parameters of the rate law including reaction orders, rate constant (k), frequency factor (A), and activation energy (Ea). Typical results of the proposed protocol are shown and discussed in the framework of the bleaching reaction of food dye allura red (RD40) and hypochlorite, as a representative example. A graphical approach of the concentration vs time data measured under the experimental condition where [RD40] ≪ [ClO−] (isolation method) suggests a first-order kinetics with respect to the dye. In addition, the analysis of the pseudo-first-order constant (kobs) shows a firstorder relationship with respect to ClO−. In addition, using the two-point form of the Arrhenius equation, values of 3.22 × 107 s/M and 44.55 kJ/mol were obtained for A and Ea, respectively. Interestingly, all the kinetic parameters (reaction orders, k, A, and Ea) are on the same order of magnitude as those previously reported in the literature and acquired with more sophisticated and accurate equipment. This experience provides evidence that it is possible to proceed with remote experimental activities to deepen the collection and analysis of kinetic data during a pandemic.
publishDate 2021
dc.date.none.fl_str_mv 2021-05-12
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/11336/142743
Madriz Ruiz, Lorean Mercedes; Cabrerizo, Franco Martín; Vargas Balda, Ronald Eduardo; Exploring chemical kinetics at home in times of pandemic: Following the bleaching of food dye allura red using a smartphone; American Chemical Society; Journal Of Chemical Education; 98; 6; 12-5-2021; 2117-2121
0021-9584
CONICET Digital
CONICET
url http://hdl.handle.net/11336/142743
identifier_str_mv Madriz Ruiz, Lorean Mercedes; Cabrerizo, Franco Martín; Vargas Balda, Ronald Eduardo; Exploring chemical kinetics at home in times of pandemic: Following the bleaching of food dye allura red using a smartphone; American Chemical Society; Journal Of Chemical Education; 98; 6; 12-5-2021; 2117-2121
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/url/https://pubs.acs.org/doi/10.1021/acs.jchemed.0c01427
info:eu-repo/semantics/altIdentifier/doi/10.1021/acs.jchemed.0c01427
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
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score 13.070432

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