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A Further Demonstration of Sulfite-Induced Redox Cycling of Metal Ions Initiated by Shaking
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Abstract
Details of a fascinating laboratory demonstration of the sulfite-induced redox cycling of Ni(II)/Ni(III), which is initiated by shaking the solution in the presence of air, are reported. The balance between the sulfite and oxygen concentration controls the direction of the overall reaction. The dissolved oxygen is used during the rapid sulfite-induced oxidation of the metal ion or complex, as well as during the subsequent reduction by sulfite and the oxidation of sulfite to sulfate. Shaking the solution in the presence of air restores the dissolved oxygen concentration, and the oxidation-reduction cycle occurs again.
Keywords (Audience):
High School / Introductory ChemistryKeywords (Domain):
DemonstrationsKeywords (Feature):
Tested DemonstrationsKeywords (Subject):
Oxidation / ReductionCiting Articles
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This article has been cited by 1 ACS Journal articles (1 most recent appear below).
Highly Efficient Photoinitiation in the Cerium(III)-Catalyzed Aqueous Autoxidation of Sulfur(IV). An Example of Comprehensive Evaluation of Photoinduced Chain Reacions
Ildikó Kerezsi, Gábor Lente, and István FábiánJournal of the American Chemical Society2005 127 (13), 4785-4793Highly Efficient Photoinitiation in the Cerium(III)-Catalyzed Aqueous Autoxidation of Sulfur(IV). An Example of Comprehensive Evaluation of Photoinduced Chain Reacions
Ildikó Kerezsi, Gábor Lente, and István FábiánJournal of the American Chemical Society2005 127 (13), 4785-4793The photoinitiated and cerium(III)-catalyzed aqueous reaction between sulfite ion and oxygen has been studied in a diode-array spectrophotometer using the same light beam for excitation and detection. Cerium(III) is identified as the photoactive absorbing ...
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- Received: August 03, 2009
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