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BIBTEX RIS

Determinação potenciométrica da concentração micelar crítica de surfactantes: uma nova aplicação metodológica no ensino de Química

2009; Brazilian Chemical Society; Volume: 32; Issue: 2 Linguagem: Inglês

10.1590/s0100-40422009000200041

ISSN

1678-7064

Autores

Ivanise Rizzatti, Dilson R. Zanette, Lígia C. Mello,

Tópico(s)

Various Chemistry Research Topics

Resumo

CHEMICAL LEARNING.The participation of the students in the planning, execution and discussion of experimental results is important for the valuation of the role of them in the construction of the chemical knowledge implicited in the approach between education and research.This work relates either the construction of selective membrane electrodes for surfactants and its application in the potenciometric determination of the critical micellar concentration of the sodium dodecyl sulfate (SDS) and dodecyltrimethylammonium bromide (DTAB) surfactants.In adition it´s possible to discuss the potenciometric results in matching with the data valued for the tensiometric and condutimetric traditionally used in the physicalchemistry lessons.

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