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ERIC Number: EJ1017113
Record Type: Journal
Publication Date: 2013-Jun
Pages: 2
Abstractor: As Provided
ISSN: ISSN-0021-9584
Visual Observation of Dissolution of Copper Ions from a Copper Electrode
Ikemoto, Isao; Saitou, Kouichi
Journal of Chemical Education, v90 n6 p763-764 Jun 2013
During electrolysis, to visually observe the conversion of a metal to its cation, either the cation or its complex ion should have a distinct color while the electrolyte solution must be colorless and transparent. A demonstration is described in which copper is used as the electrodes and sodium polyacrylate (a superabsorbent polymer) solution is used as the electrolyte in an electrolytic cell. Dissolution of copper ions from the copper electrode, migration of copper ions from the anode toward the cathode in the electrolyte solution, and deposition of copper metal on the cathode can be observed simultaneously. This demonstration is useful for teaching high school and first-year college students about electrolysis.
Division of Chemical Education, Inc and ACS Publications Division of the American Chemical Society. 1155 Sixteenth Street NW, Washington, DC 20036. Tel: 800-227-5558; Tel: 202-872-4600; e-mail:; Web site:
Publication Type: Journal Articles; Reports - Descriptive
Education Level: High Schools; Higher Education; Postsecondary Education
Audience: N/A
Language: English
Sponsor: N/A
Authoring Institution: N/A
Grant or Contract Numbers: N/A