Hoffmann, Michael R. (1977) Kinetics and mechanism of oxidation of hydrogen sulfide by hydrogen peroxide in acidic solution. Environmental Science and Technology, 11 (1). pp. 61-66. ISSN 0013-936X. doi:10.1021/es60124a004. https://resolver.caltech.edu/CaltechAUTHORS:20151215-094958671
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Abstract
The kinetics of the oxidation of hydrogen sulfide and hydrosulfide ion to sulfur and sulfate in aqueous solution by hydrogen peroxide is studied potentiometrically. In the pH range 8-3, the rate law for the oxidation of H_2S is -d[H_2S]/dt = k_1[H_2S] [H_2O_2] + k_2K_(a1)[H_2S] [H_2O_2]/[H+] where K_(a1) is the first acid dissociation constant of H_S, k_2 = 29.0 M^(-1) min^(-1), and k_1= 0.5 M^(-1) min^(-1). The rate law and other data indicate that the reaction proceeds via a nucleophilic displacement by sulfide on hydrogen peroxide with the formation of polysulfide intermediates.
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| Additional Information: | © 1977 American Chemical Society. Received for review, July 11, 1975. Accepted July 23, 1976. Financial support by the Rockefeller Foundation and the Public Health Service (ES 00080-08). The author thanks J. J. Morgan and T. Holm for helpful discussion. | |||||||||
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| Issue or Number: | 1 | |||||||||
| DOI: | 10.1021/es60124a004 | |||||||||
| Record Number: | CaltechAUTHORS:20151215-094958671 | |||||||||
| Persistent URL: | https://resolver.caltech.edu/CaltechAUTHORS:20151215-094958671 | |||||||||
| Official Citation: | Kinetics and mechanism of oxidation of hydrogen sulfide by hydrogen peroxide in acidic solution Michael R. Hoffmann Environmental Science & Technology 1977 11 (1), 61-66 DOI: 10.1021/es60124a004 | |||||||||
| Usage Policy: | No commercial reproduction, distribution, display or performance rights in this work are provided. | |||||||||
| ID Code: | 62925 | |||||||||
| Collection: | CaltechAUTHORS | |||||||||
| Deposited By: | George Porter | |||||||||
| Deposited On: | 15 Dec 2015 19:11 | |||||||||
| Last Modified: | 10 Nov 2021 23:08 |
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