Study of Metal–NH3 Interfaces (Metal = Cu, Ni, Ag) Using Potentiostatic Curves

Nelson Nunes , Angela Martins and Ruben Elvas Leitão
Department of Chemical Engineering, Lisbon Engineering Institute (ISEL), Polytechnic Institute of Lisbon, 1950-062 Lisboa, Portugal
J. Chem. Educ., 2007, 84 (6), p 1017
DOI: 10.1021/ed084p1017
Publication Date (Web): June 1, 2007

Abstract

Students determine kinetic and thermodynamic parameters of different metal–solution interfaces. These parameters are obtained from potentiostatic curves using the Tafel and the Arrhenius equations. The work involves the variation of type of metal, solution concentration, and temperature. The results allow the discussion of the polarizability, transfer coefficient, and activation energy of the processes, as well as the differences between them.

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  • Received: August 03, 2009

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