The rate of reaction of HO2 radicals with HO and with NO
โ Scribed by B.A. Thrush; J.P.T. Wilkinson
- Publisher
- Elsevier Science
- Year
- 1981
- Tongue
- English
- Weight
- 286 KB
- Volume
- 81
- Category
- Article
- ISSN
- 0009-2614
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โฆ Synopsis
The rate-coefficients for the reactions HO2 + NO = HO + NO* (1) and HO* + HO = Hz0 + 0, (2) have been remeasured by laser magnetic resonance using an improved experimental arrangement. Values of kl = (6-9 f 0.6) X lO-12 cm3 molecule-' s-l and k2 = (5.8 -c 09) X 10-l cm3 molecule-' s-' (one standard deviation) were obtained at 298 K.
๐ SIMILAR VOLUMES
Replacement of N 2 by CO in H 2 + 02 + N 2 mixtures undergoing slow reaction at 500ยฐC causes a marked increase in the reaction rate and a decrease in the induction period, expressed as the time to half maximum rate. A detailed interpretation using a computer treatment gives k24/klo 1/2 = 0.42 ยฑ 0.03
Receiicd IS Jo;> 1979 r\fe33uremcnrs of the rates of the re;ftLlfln, HO1 -NO2 = H202 + 02 fff, by laser magnertc resommce spectroscopy at 298-5 Iye iielded the follotring uhy;fXSfor ficlium\_zx\_rers at ~nrious toss1 prnntres: (2.9 f 1.2) X tOei aa3 z~IOfecde 5 3c 2 Torr, t-1.3 : I.81 X LO cm moIccu
Mixtures of N20, Hz, 0 2 , and trace amounts of NO and NO2 were photolyzed at 213.9 nm, at 245'-328'K, and at about 1 atm total pressure (mostly H2). HO2 radicals are produced from the photolysis and they react as follows: (la) Reaction (lb) is unimportant under all of our reaction conditions. Rea
The rate of the reaction (1) NO + HOz + OH + NO2 was determined in an isothermal discharge flow reactor with a combined ESR-LMR detection under pseudo-first-order conditions in HOz. The rate constant was identical in experiments with two different HOn sources: F + H202 and H + 0 2 + M. The absolute