The kinetics of dimethyl sulfoxide (DMSO) oxidation by peroxomonophosphoric acid (PMPA) in aqueous medium a t 308 K and I = 0.4 mol/dm3 follow the rate expressions In the pH range from 0 to 2, where k l and kz are 5.092 X 10-1 dm3/mol sec and = 0, respectively; in the pH range from 4 to 7, where k2
Kinetics and mechanism of oxidation of hydrazinium ion with peroxomonophosphoric acid in acid perchlorate solutions and role of trace iodide ions
β Scribed by T. Peter Amala Dhas; D. K. Mishra; R. K. Mittal; Y. K. Gupta
- Publisher
- John Wiley and Sons
- Year
- 1991
- Tongue
- English
- Weight
- 566 KB
- Volume
- 23
- Category
- Article
- ISSN
- 0538-8066
No coin nor oath required. For personal study only.
β¦ Synopsis
The reaction of peroxomonophosphoric acid and hydrazinium ion in acid perchlorate solutions occurs as per stoichiometry (i), and the rate law (ii) at large [NzH~'],
(i)
where K& is the first acid dissociation constant of H3P05 and kl and kz are rate constants found to be 2.6 x s-' and 5.0 x lo-' M-' s-', respectively, at 35". The reaction is greatly catalyzed by iodide ions. The mechanism involves a redox cycle 1-/12 and the rate is independent of [N2H5'] in the presence of iodide ions. K& was found to be 0.55 M-' and independent of temperature.
π SIMILAR VOLUMES
Silver(1) catalyzed oxidation of aspartic acid by cerium(1V) was studied in acid perchlorate medium. The stoichiometry of the reaction is represented by the eq. (i) Dimeric cerium(IV) species has been indicated and employed in calculations of monomeric cerium(IV) species concentrations. The reactio
## Abstract The Ce(IV) oxidation of the fiveβ, sixβ, and sevenβmembered ring Ξ±βhydroxycycloalkanecarboxylic (C5, C6, and C7) acids to the corresponding cyclic ketones has been studied in acidic perchlorate media. The data may be interpreted in terms of a mechanism which involves fast preequilibrium
Kinetics of oxidation of thiocyanate ion (NCS-) by iodine monochloride and iodine has been studied in aqueous perchloric acid medium. The rates of oxidations followed the rate laws: Variations in ionic strength and dielectric constant of the medium had little effects on the rates of reactions with