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  Home > JCE Print > Journal of Chemical Education > Issues > 2008  > January  >
In the Classroom
JCE DigiDemos: Tested Demonstrations
Electrochemical Polishing of Silverware: A Demonstration of Voltaic and Galvanic Cells
Michelle M. Ivey and Eugene T. Smith
Harriet L. Wilkes Honors College, Florida Atlantic University, Jupiter, FL 33418

checked by:

Garry MacGlaun
Department of Chemistry, Gainsville College, Gainsville, GA 30503

James H. Niewahner
Department of Chemistry, Northern Kentucky University, Highland Heights, KY 41076

Cover
January 2008
Vol. 85 No. 1
p. 68
Abstract
In this demonstration, the students use their knowledge of electrochemistry to determine that tarnish can be removed from silverware by electrochemically converting it back to silver using items commonly available in the kitchen: aluminum foil and baking soda. In addition to using this system as an example of a galvanic cell, an electrolytic cell is constructed using a battery and a graphite electrode, to first generate a layer of tarnish that can then be removed.
More Information
*
Citation
Ivey, Michelle M.; Smith, Eugene T. J. Chem. Educ. 2008, 85, 68.
*
Keywords
Aluminum; Consumer Chemistry; Demonstrations; Electrochemistry; Electrolytic / Galvanic Cells / Potentials; First-Year Undergraduate / General; Hands-On Learning / Manipulatives; High School / Introductory Chemistry; Silver
*
History
Created:
Last Updated:
12/4/2007
12/10/2007
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