Hoffmann, M. R. and Edwards, J. O. (1975) Kinetics of the oxidation of sulfite by hydrogen peroxide in acidic solution. Journal of Physical Chemistry, 79 (20). pp. 2096-2098. ISSN 0022-3654. https://resolver.caltech.edu/CaltechAUTHORS:20151215-113017738
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Abstract
The kinetics of the oxidation of sulfite by hydrogen peroxide has been investigated by stopped-flow spectrophotometry over the pH range 4-8. The rate law for the oxidation of sulfite in this pH range is -d[SO_2]_T/dt = k [H^+][H_2O_2][SO_2]_T([H^+]/([H^+] K_a_2)} + k'[HA][H_2O_2][SO_2]_T{[H^+]/([H^+] + K_a_2 where HA represents all possible proton donors in solution. The reaction probably proceeds via a nucleophilic displacement by H_2O_2 on HSO_3^- to form a peroxomonosulfurous acid intermediate which then undergoes a rate-determining rearrangement.
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| Additional Information: | © 1975 American Chemical Society. (Received November 18, 1974; Revised Manuscript Received June 13, 1975) Publication costs assisted by the National institute of Environmental Health Sciences. We are grateful to the PHS (Grant No. ES0080-08) and the AFOSR (Grant No. 71-1961A) for financial support. | |||||||||
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| Issue or Number: | 20 | |||||||||
| Record Number: | CaltechAUTHORS:20151215-113017738 | |||||||||
| Persistent URL: | https://resolver.caltech.edu/CaltechAUTHORS:20151215-113017738 | |||||||||
| Official Citation: | Kinetics of the oxidation of sulfite by hydrogen peroxide in acidic solution M. R. Hoffmann and J. O. Edwards The Journal of Physical Chemistry 1975 79 (20), 2096-2098 DOI: 10.1021/j100587a005 | |||||||||
| Usage Policy: | No commercial reproduction, distribution, display or performance rights in this work are provided. | |||||||||
| ID Code: | 62944 | |||||||||
| Collection: | CaltechAUTHORS | |||||||||
| Deposited By: | George Porter | |||||||||
| Deposited On: | 15 Dec 2015 20:47 | |||||||||
| Last Modified: | 03 Mar 2020 13:01 |
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