1977
DOI: 10.1063/1.435409
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Temperature dependence of the total reaction rates for Cl+HI and Cl+HBr

Abstract: Articles you may be interested inExamination of the Br+HI, Cl+HI, and F+HI hydrogen abstraction reactions by photoelectron spectroscopy of BrHI−, ClHI−, and FHI− J. Chem. Phys. 92, 7205 (1990); 10.1063/1.458208 Energy dependence and isotope effect for the total reaction rate of Cl+HI and Cl+HBr Thermal reaction rate constants have been determined for the reactions Cl + HI and Cl + HBr in the temperature range 220-400°K. The rates vary slowly with temperature. For Cl + HI the effective reaction cross section re… Show more

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Cited by 64 publications
(8 citation statements)
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“…We can also compare our results with the rapid reaction of Cl atoms with HI ( k 295 ≈ 1.5 × 10 -10 cm 3 s -1 ) , which displays a complex temperature dependence with the rate coefficient decreasing with increasing temperature above ≈ 300 K and displaying the reverse behavior at t < 300 K . In addition, the ratio of rate coefficient for Cl atoms with HI and DI also showed a pronounced temperature dependence and an increase in the translational energy of the Cl atom reduced the rate coefficient.…”
Section: Discussionmentioning
confidence: 57%
“…We can also compare our results with the rapid reaction of Cl atoms with HI ( k 295 ≈ 1.5 × 10 -10 cm 3 s -1 ) , which displays a complex temperature dependence with the rate coefficient decreasing with increasing temperature above ≈ 300 K and displaying the reverse behavior at t < 300 K . In addition, the ratio of rate coefficient for Cl atoms with HI and DI also showed a pronounced temperature dependence and an increase in the translational energy of the Cl atom reduced the rate coefficient.…”
Section: Discussionmentioning
confidence: 57%
“…The investigation of laser-flash-initiated reaction 1 in the Cl 2 /HBr flow system using infrared chemiluminescence (IRCL) from excited HCl formed in the reaction gave a curved Arrhenius relation, concave to the 1/ T axis. Its form is unusual in that only the high-temperature data (at 402 and 349 K) are responsible for the curvature.…”
Section: Discussionmentioning
confidence: 99%
“…Direct experimental studies of the temperature coefficients for reaction 1 are scarce, and some of them are controversial. , Therefore, we have decided to proceed with our VLPR investigation of reaction 1 in the range 228−368 K. The results are presented in the following.…”
Section: Introductionmentioning
confidence: 99%
“…Ground-state I atoms are generated from the F + DI → I( 2 P 3/2 ) + DF reaction. As with the F + DCl reaction, the F + DI rate constant is not determined; however, the F + HI rate coefficient is k = 8 × 10 -11 cm 3 / (molecule s) and the F + DI rate coefficient is also likely to be in this range . Accordingly, the ground-state I density is taken as the initial DI density, [DI] 0 .…”
Section: Methodsmentioning
confidence: 99%