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Reproportionation of Copper(I)

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Jan Malyszko and Maria Kaczor

Institute of Chemistry, Saint Cross Academy in Kielce, PL-25020 Kielce, Poland

J. Chem. Educ., 2003, 80 (9), p 1048

DOI: 10.1021/ed080p1048

Publication Date (Web): September 1, 2003

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.

Keywords (Audience):

Second-Year Undergraduate

Keywords (Domain):

Demonstrations

Keywords (Pedagogy):

Hands-On Learning / Manipulatives

Keywords (Subject):

Copper

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