Kcccivcd 7 hlarch 1977 The rate constant Ior the rrnction Br + 0~ -BrO + 02 has been mcawrcd over the tempcraturc rdrye 224 to 522 EC in a dxhargc llow systcni ucmk a IKISF spcctrornctcr a~ B detector. Rcsultg, c\pre%scd in the form kr = (3.34 c O-40) X IO-\*' X cxp[ -(978 1. 36)/T] cn13 s-' , arc c
Rate constant for the reaction of nh2 with ozone in relation to atmospheric processes
β Scribed by H. Kurasawa; R. Lesclaux
- Publisher
- Elsevier Science
- Year
- 1980
- Tongue
- English
- Weight
- 592 KB
- Volume
- 72
- Category
- Article
- ISSN
- 0009-2614
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β¦ Synopsis
The absolute rate constant of the reaction between NH2 and ozone has been measured using a flash photo&is--laser resonance techmque and found to be 4 = 6.3 (~1.0) X IO-l4 cm3 molecule-' S-I at room temperature. The &hen&s expressIon, determined from measurements in the temperature range 298-380 K IS k4 = 4.2 X lO-L2 exp(-2.5 = OS/RI) (E III kcal mole-' ). The possiihty of formation or ehrmnatlon of nitrogen oxides from the reactions of NH2 in the atmosphere E exarnmed.
π SIMILAR VOLUMES
The rates of decay of ozone in a large excess of the cycloalkene have been re-measured by an improved experimental procedure, and the following second-order rate constants (cm3 molecule s-l) have been determined in synthetic air at atmospheric pressure: The results are discussed in relation to exis
## Abstract The rate constant for the reaction of Br + O~3~ β BrO + O~2~ has been measured at four temperatures from 234 to 360 K by the technique of discharge flow coupled with resonanceβfluorescence detection of bromine atoms. The measured rate constants obey the Arrhenius expression __k__ = (9.4
Kinetic studies on reactions of ozone with trans-1,2-dichloroethene (DCE) and vinyl chloride (VC) were performed in air. In the presence of scavengers of radicals, such as CHBCHO, the rates for both reactions are second order (first order in each reactant). Observed rate constants are (1.80 f 0.29)
Gas-phase rate constants for the reaction of NOz with 16 conjugated olefins were determined a t room temperature by either conventional methods for bimolecular processes or by competitive reactions. It was found that the rate constants for conjugated olefins were larger than those for simple mono-ol