The kinetics of the self-reactions of HO 2 , CF 3 CFHO 2 , and CF 3 O 2 radicals and the cross reactions of HO 2 with FO 2 , HO 2 with CF 3 CFHO 2 , and HO 2 with CF 3 O 2 radicals, were studied by pulse radiolysis combined with time resolved UV absorption spectroscopy at 295 K. The rate constants f
Rate constants at 295 K for the reactions of atomic chlorine with H2O2, HO2, O3, CH4 and HNO3
β Scribed by Ming-Taun Leu; W.B. Demore
- Publisher
- Elsevier Science
- Year
- 1976
- Tongue
- English
- Weight
- 516 KB
- Volume
- 41
- Category
- Article
- ISSN
- 0009-2614
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β¦ Synopsis
Constants of the rawions of Cl with HIOz. IX&, 03, CH4, and HNC)J wertt mezxured at 295 K using a flaw discharge-mass spectrometric method. The rate consmts are, WpectiveIy, (6.2 ?c I.51 X 10qzS, (32&) x 10"tl, (1.3 -+. 0.3) X lo-'t, (1.2 ?t 0.3) X 10-13, and (6.8 t 3.4) X lO-is cm3/s.
π SIMILAR VOLUMES
Absolute rate constants for the reaction of O(3P) atoms with CHI = CHF, CH2 = CHC1, and CH2 = CHBr have been obtained at 298 f 2Β°K using a modulation phase shift technique. The rate constants ( k z X lo-\* l./mole.sec) obtained are: CH2 = CHF (1.61 =t 0.20), CH2 = CHCl (2.54 + 0.26), and CHZ = CHBr
The decomposition of dimethyl peroxide (DMP) was studied in the presence and absence of added NO, to determine rate constants k l and k z in the temperature range of 391-432OK: The results reconcile the studies by Takezaki and Takeuchi, Hanst and Calvert, and Batt and McCulloch, giving log kl(sec-1
The reactions of CH3 radicals with O(3P) and 0 2 have been studied at 295 K in a gas flow reactor sampled by a mass spectrometer. For the reaction between CH3 and 0, conditions were such that [O] >> [CH3] and the methyl radicals decayed under pseudo-first-order conditions giving a rate coefficient o
Using a pulse radiolysis UV absorption technique and subsequent simulations of experimental NO1 and FNO absorption transients, rate constants for reaction between CF90 and CFsO2 radicals with NO were determined, CFp02+NO+CF,O+N02 (3 ), CF,OtNO~CF,OtFNO(5).k~wasderivedtobe(1.68~0.26)X10~~'cm3molecuIe
Using the pulse radiolysis WV absorption technique and subsequent simulations of experimental absorption transients at and 276 nm, upper limits of the rate constants for the reactions of CF302 and CF,O radicals with ozone were determined at K, CF302 t OI-+CF,Ot 202 (4), CF,O t 03+CF302+02 (5). The u