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  Home > JCE Print > Journal of Chemical Education > Issues > 2003  > September  >
In the Laboratory
Reproportionation of Copper(I)
Jan Malyszko and Maria Kaczor
Institute of Chemistry, Saint Cross Academy in Kielce, PL-25020 Kielce, Poland
Cover
September 2003
Vol. 80 No. 9
p. 1048
Abstract
The experiment introduces students to the chemistry of metals that form compounds with more than one oxidation state. Cu(I) is an example of an intermediate oxidation state that can undergo disproportionation or reproportionation reactions depending on the solvent and background electrolyte. A simple experiment to demonstrate the reproportionation of copper(I) from the reaction between copper metal and copper(II) in acidic aqueous solution containing an excess of chlorides is presented. The reaction is fast enough to complete the entire experiment within an hour.
Supplement
The theoretical background related to this experiment and detailed notes for the students are available.
*  Contents JCE2003p1048W.doc (Microsoft Word)
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More Information
*  Citation
 Malyszko, Jan; Kaczor, Maria. J. Chem. Educ. 2003 80 1048.
*  Keywords
 Copper; Demonstrations; Electrochemistry; General Chemistry; Laboratory Instruction; Redox Reactions
*  History
 Created:
Last Updated:		 August 4, 2003
February 28, 2005
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