The kinetics and mechanism of the reaction Cl ฯฉ HO 2 : products (1) have been studied in the temperature range 230-360 K and at total pressure of 1 Torr of helium using the discharge-flow mass spectrometric method. The following Arrhenius expression for the total rate constant was obtained either fr
FTIR studies of the kinetics and mechanism for the reaction of Cl atom with formylchloride
โ Scribed by H. Niki; P. D. Maker; C. M. Savage; L. P. Breitenbach
- Publisher
- John Wiley and Sons
- Year
- 1980
- Tongue
- English
- Weight
- 257 KB
- Volume
- 12
- Category
- Article
- ISSN
- 0538-8066
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โฆ Synopsis
The rate constant for the reaction C1+ CHClO -HC1+ CClO was determined from relative decay rates of CHClO and CH&1 in the photolysis of mixtures containing Clz (-1 torr), CH3Cl (-1 torr), and 0 2 ( 4 . 1 torr) in 700 torr Nz. In such mixtures CHClO was generated in situ as a principal product prior to complete consumpjion of 0 2 . The value of k(C1+ CHClO)/k(Cl + CH3C1) = 1.6 f 0.2(3a) combined with the literature value of k(C1f CH3C1) = 4.9 X cm3/molecule sec gives k(C1+ CHClO) = 7.8 X cm3/molecule sec at 298 f 2 K, in excellent agreement with a previous value of (7.9 f 1.5) X cm3/molecule sec determined by Sanhueza and Heicklen [J. Phys. Chem., 79,7 (1975)]. Thus this reaction is approximately 100 times slower than the corresponding reactions of aldehydes and alkanes with comparable C-H bond energies (595 kcal/mol).
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