Kinetics and Mechanism of Electron Transfer Reaction: Osmium (VIII) and Ruthenium (III) Catalyzed Oxidation of Sulfanilic Acid by Alkaline Hexacyanoferrate (III)

ISSN: 1877-9476 (Online)
ISSN: 1877-9468 (Print)


Volume 5, 4 Issues, 2015


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Current Physical Chemistry

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Kinetics and Mechanism of Electron Transfer Reaction: Osmium (VIII) and Ruthenium (III) Catalyzed Oxidation of Sulfanilic Acid by Alkaline Hexacyanoferrate (III)



Current Physical Chemistry, 4(3): 290-301.

Author(s): Riya Sailani, Deepmala Pareek, Narendra K. Soni, C. L. Khandelwal and P. D. Sharma

Affiliation: Department of Chemistry, University of Rajasthan, Jaipur-302055, India.

Abstract

The kinetics and mechanism of oxidation of sulfanilic acid by hexacyanoferrate (III) catalyzed by osmium (VIII) and ruthenium (III) respectively have been studied spectrophotometrically. The uncatalyzed reaction simultaneously occurring in absence of these catalysts is suspected due to catalysis by any trace metal-ion present as an impurity either in the reagents or water. The rate of the reaction was also retarded by hexacyanoferrate (II).

The energy and entropy of activation were calculated in these reactions. A plausible reaction mechanism has been suggested in each case accounting for all the experimental observations.


Keywords:

Hexacyanoferrate (III), kinetics, mechanism, oxidation, sulfanilic acid.



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Article Details

Volume: 4
Issue Number: 3
First Page: 290
Last Page: 301
Page Count: 12
DOI: 10.2174/1877946804666140411235618
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