The room temperature rate coefficient for the reaction (3) Br ϩ Br O : Br ϩ BrO 2 2 has been measured using the technique of pulse-laser photolysis with long-path transient absorption detection of the BrO reaction product. A value of k ϭ (2.0 Ϯ 0.5) ϫ 3 was determined. The photolysis products of Br
Rate constant for the reaction BrO + NO → Br + NO2
✍ Scribed by Ming-Taun Leu
- Publisher
- Elsevier Science
- Year
- 1979
- Tongue
- English
- Weight
- 358 KB
- Volume
- 61
- Category
- Article
- ISSN
- 0009-2614
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✦ Synopsis
The rate constant for the reaction BrO + NO -+ Br f NO2 has been determine4 over the tempemture range 230 I( to 425 K in a discharge flow system using a mass spectrometer as a detector_ Results, expressed in the Arrhenius form kr = (7.11 5 0.23) X 10-t* eup[(296 f 10)/T] cm3 s-t, are compared with previous measurements.
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The CHsOs radical was generated by pulsed laser photolysis and was detected directly by photoionization mass spectrometry. The radical was photoionized by the Ar resonance lines ( 11.62 and 11.83 eV) and detected as the parent ion, CHsO: . Reactions of CH302 and CDs02 with NO were studied by time-re
The overall rate coefficient k of the self recombination of BrO radicals has been measured at 298 K with use of the discharge flow/mass spectrometry technique. The rate coefficient kz for the reaction channel forming Bra has been also determined. The results are: k = (3.2 2 0.5) X and kz = (4.7 t 1.
The reaction involves two short-lived collision complexes, BHNOf and HBONt, which rearrange to products BO+NH via the same cyclic transition state. The overall rate constant depends on the rates of complex formation by capture over the centrifugal barrier in the dipole-dipole potential, and the rate