Comparative behavior in the kinetics of reduction by superoxide and dithionite ions
β Scribed by Bradic, Z.; Wilkins, R. G.
- Book ID
- 120258701
- Publisher
- American Chemical Society
- Year
- 1984
- Tongue
- English
- Weight
- 478 KB
- Volume
- 106
- Category
- Article
- ISSN
- 0002-7863
No coin nor oath required. For personal study only.
π SIMILAR VOLUMES
The reaction of 2,6-dichlorophenolindophenol (DCPI) and dithionites is studied kinetically by applying the stopped-flow technique. Reaction rate constants are given for the pH range 1.30-6.80. The reaction was found to follow first-order kinetics with respect to each of the reactants. For pH 3.97,5.
The rate constants for the protonation of "free" (that is, solvated) superoxide ions by water and ethanol are equal to 0.5-3.5 X lO-~M-l.s-' in DMF and AN at 20'. It has been found that the protonation rates for the ion pairs of 0; with the BudN+ cation are much slower than those for "free" 0,. It i