The Kinetics of Dissolution Revisited

Paula S. Antonel , Pablo A. Hoijemberg , Leandro M. Maiante and M. Gabriela Lagorio
INQUIMAE/Departamento de Química Inorgánica, Analítica y Qca. Física, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Ciudad Universitaria, Pabellón II, 1 er piso, C1428EHA, Buenos Aires, Argentina
J. Chem. Educ., 2003, 80 (9), p 1042
DOI: 10.1021/ed080p1042
Publication Date (Web): September 1, 2003

Abstract

An experiment analyzing the kinetics of dissolution of a solid with cylindrical geometry in water is presented. The dissolution process is followed by measuring the solid mass and its size parameters (thickness and diameter) as a function of time. It is verified that the dissolution rate follows the Nernst model. Data treatment is compared with the dissolution of a spherical solid previously described. Kinetics, diffusion concepts, and polynomial fitting of experimental data are combined in this simple experiment.

Keywords (Audience):

Second-Year Undergraduate

Keywords (Domain):

Laboratory Instruction

Keywords (Pedagogy):

Hands-On Learning / Manipulatives

Keywords (Subject):

Transport Properties
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History

  • Received: August 03, 2009

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