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  Home > JCE Print > Journal of Chemical Education > Issues > 1997  > May  >
In the Classroom
Applications and Analogies
The Painting-Sponging Analogy for Chemical Equilibrium
Adoni Garritz
Calle 5 de mayo No. 117, Casa 5, Tepepan Xochimilco, 16020, Mexico D. F., Mexico
Cover
May 1997
Vol. 74 No. 5
p. 544
Abstract
An analogy for chemical equilibrium is presented, in which high school or younger students can follow the advance towards equilibrium and its final dynamic nature. The relative opposition between forward and backward processes in a real chemical reaction is exemplified by the distance of a road line that is painted by one person and erased by another, both with different skills and working speeds. The graphical results of the progress of the line distance is entirely similar to the increasing of products concentration in a chemical reaction starting from the reactants. In the analogy, the final equilibrium position is independent of the starting point, as well as in a real chemical process. A simple basic program is included for interactive learning purposes.
More Information
*  Citation
 Garritz, Adoni. J. Chem. Educ. 1997 74 544.
*  Keywords
 Introductory/High School Chemistry, Physical Chemistry, Teaching/Learning Aids, Computer Assisted Instruction, Equilibrium
*  History
 Created:
Last Updated:		 July 28, 1999
June 23, 2005
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  Home > JCE Print > Journal of Chemical Education > Issues > 1997 > May > Page 544


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