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dc.contributor.author
Marcolongo, Juan Pablo
dc.contributor.author
Mirenda, Martin
dc.date.available
2019-09-16T21:08:53Z
dc.date.issued
2011-05
dc.identifier.citation
Marcolongo, Juan Pablo; Mirenda, Martin; Thermodynamics of sodium dodecyl sulfate (SDS) micellization: An undergraduate laboratory experiment; American Chemical Society; Journal Of Chemical Education; 88; 5; 5-2011; 629-633
dc.identifier.issn
0021-9584
dc.identifier.uri
http://hdl.handle.net/11336/83682
dc.description.abstract
An undergraduate laboratory experiment is presented that allows a thermodynamic characterization of micelle formation of sodium dodecyl sulfate (SDS) in aqueous solutions. The critical micelle concentration (CMC) and the degree of micelle ionization (α) are obtained at different temperatures by conductimetry. The molar standard free energy (ΔmicḠ), enthalpy (ΔmicH̄°), and entropy (Δ micS̄°) for the micellization process are calculated using the CMC, α, and their temperature dependences within the framework of a simplified model, the closed association model, which assumes an equilibrium between free surfactant monomers and monodispersed micelles. On the basis of hydration phenomena of surfactant molecules, a physicochemical discussion of the results is also proposed.
dc.format
application/pdf
dc.language.iso
eng
dc.publisher
American Chemical Society
dc.rights
info:eu-repo/semantics/openAccess
dc.rights.uri
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.subject
Aqueous Solution Chemistry
dc.subject
Conductivity
dc.subject
Hands-On Learning/Manipulatives
dc.subject
Laboratory Instruction
dc.subject
Micelles
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Organosulfur Compounds
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Physical Chemistry
dc.subject
Thermodynamics
dc.subject
Upper-Division Undergraduate
dc.subject.classification
Físico-Química, Ciencia de los Polímeros, Electroquímica
dc.subject.classification
Ciencias Químicas
dc.subject.classification
CIENCIAS NATURALES Y EXACTAS
dc.title
Thermodynamics of sodium dodecyl sulfate (SDS) micellization: An undergraduate laboratory experiment
dc.type
info:eu-repo/semantics/article
dc.type
info:ar-repo/semantics/artículo
dc.type
info:eu-repo/semantics/publishedVersion
dc.date.updated
2019-06-11T18:16:31Z
dc.journal.volume
88
dc.journal.number
5
dc.journal.pagination
629-633
dc.journal.pais
Estados Unidos
dc.description.fil
Fil: Marcolongo, Juan Pablo. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Departamento de Química Inorgánica, Analítica y Química Física; Argentina
dc.description.fil
Fil: Mirenda, Martin. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Departamento de Química Inorgánica, Analítica y Química Física; Argentina
dc.journal.title
Journal Of Chemical Education
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/https://doi.org/10.1021/ed900019u
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/https://pubs.acs.org/doi/abs/10.1021/ed900019u
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