A kinetic study of the oxidation of N(III) by ClO2− in aqueous acidic media

1980 ◽  
Vol 58 (2) ◽  
pp. 159-163 ◽  
Author(s):  
Samir S. Emeish ◽  
Keith E. Howlett

Kinetics of the reaction between nitrous acid and chlorite have been studied spectrophotometrically. The rate equation involves terms [HNO2]1.5 and [ClO2−]0.5, and both an uncatalysed and a chloride ion-catalysed path have been identified. A mechanism involving peroxonitrite and hypochlorous acid as intermediates is shown to be consistent with the observations.


2004 ◽  
Vol 92 (7) ◽  
Author(s):  
V. S. Koltunov ◽  
Robin J. Taylor ◽  
V. I. Marchenko ◽  
O. A. Savilova ◽  
K. N. Dvoeglazov

SummaryThe kinetics of the oxidation of U(IV) ions by nitrous acid in a 30% TBP solution have been determined. The rate equation was found to be:-d[U(IV)]/dwhere,



1969 ◽  
Vol 47 (14) ◽  
pp. 2561-2567 ◽  
Author(s):  
M. Wayman ◽  
E. W. C. W. Thomm

The rate of N-chlorination of N-methyl acetamide has been studied in acetate buffered hypochlorous acid solutions. The reaction rate is dependent upon pH, chloride ion concentration, and acetic acid concentration. The results fit the following rate expression[Formula: see text]The observed rate constant, kobs, has three components[Formula: see text]The results suggest that the active chlorinating species in the pH range 3.0–6.0 are HOCl, Cl2, and CH3COOCl, in order of increasing reactivity. The values of the corresponding rate constants at 25 °C are [Formula: see text], and [Formula: see text] l mole−1 min−1, the last two rate constants being related to k2 and k3 through the respective equilibrium constants.At temperatures near room temperature, the N-chlorination reaction has an apparent activation energy of 14 kcal/mole when Cl2 is the active species, and 5 kcal/mole when CH3COOCl is the chlorinating agent.



1983 ◽  
Vol 48 (11) ◽  
pp. 3202-3208 ◽  
Author(s):  
Zdeněk Musil ◽  
Vladimír Pour

The kinetics of the reduction of nitrogen oxide by carbon monoxide on CuO/Al2O3 catalyst (8.36 mass % CuO) were determined at temperatures between 413 and 473 K. The reaction was found to be first order in NO and zero order in CO. The observed kinetics are consistent with a rate equation derived from a mechanism proposed on the basis of IR spectroscopic measurements.



1964 ◽  
Vol 6 (6) ◽  
pp. 1208-1215
Author(s):  
Kh.S. Bagdasar'yan ◽  
R.I. Milyutinskaya


1975 ◽  
Vol 53 (12) ◽  
pp. 1735-1738 ◽  
Author(s):  
William R. Cullen ◽  
Frank L. Hou

The kinetics of the unimolecular isomerization reaction[Formula: see text]have been studied. The ΔH≠ values in kcal mol−1 are 36.8 ± 2.0 (M = M′ = Mn ), 46.8 ± 0.5 (M = M′ = Re ), 39.2 ± 2.8 (M = Mn, M′ = Re ). The mechanism of the rearrangement is discussed.





1976 ◽  
Vol 29 (2) ◽  
pp. 443 ◽  
Author(s):  
MA Haleem ◽  
MA Hakeem

Kinetic data are reported for the decarboxylation of β-resorcylic acid in resorcinol and catechol for the first time. The reaction is first order. The observation supports the view that the decomposition proceeds through an intermediate complex mechanism. The parameters of the absolute reaction rate equation are calculated.





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