Determination of the Rate Constant of the Reaction of CCl 2 with HCl (original) (raw)

The rate constant of the reaction between CCl 2 radicals and HCl was experimentally determined. The CCl 2 radicals were obtained by infrared multiphoton dissociation of CDCl 3. The time dependence of the CCl 2 radicals' concentration in the presence of HCl was determined by laser-induced fluorescence. The experimental conditions allowed us to associate the decrease in the concentration of radicals to the self-recombination reaction to form C 2 Cl 4 and to the reaction with HCl to form CHCl 3. The rate constant for the self-recombination reaction was determined to be in the high-pressure regime. The value obtained at 300 K was (5.7 ± 0.1) × 10 −13 cm 3 molecule −1 s −1 , whereas the value of the rate constant measured for the reaction with HCl was (2.7 ± 0.1) × 10 −14 cm 3 molecule −1 s −1 .