The rate constant for the reaction between OH and vibrationally excited H2, OH + H 2 (v = 1) ~ H20 + H, has been measured directly at 298 K. kol is found to be (7.5 -+ 3) X 10 -13 cma/molecule s, corresponding to a vibrational rate enhancement ofkol/koo = (1.2 -+ 0.4) X 102.
Vibrational enhancement of the reaction rate and steric requirements in the H + D2(ν) and D + H2(χ) reactions
✍ Scribed by I. Schechter; R. Kosloff; R.D. Levine
- Publisher
- Elsevier Science
- Year
- 1985
- Tongue
- English
- Weight
- 496 KB
- Volume
- 121
- Category
- Article
- ISSN
- 0009-2614
No coin nor oath required. For personal study only.
✦ Synopsis
The cone or acceptance for H+H= reactive collisions is shown Lo open up upon strelching of the H, bond. AL a given wtmslational energy, the sreric faclor is thus much larger for vibrzkonally cxcircd rcngems as demonswatcd by class&l IrajccLoq compulorions for H+ D?(U) and D+Hz(o). AI a given lolaI cncrgy. Ihc efficacy of rcagcm vibralional cxcimlion is convenicndy represenkd by J surprisal plot. The surprisal panmeler is essemially isompically invarinnr.
📜 SIMILAR VOLUMES
A quasiciassieal tra&ctory study has been carried out to investigate the dynanlics of collisions between H f &(I G o C4) and D + Dz(l Q IJ is; 4), using the accurate Yates-Lester potential. Reaction is selectively enhanced by the vibrational excitation of the diitomic reagent, as judged by informati
Rate coefficients, in units of 10-~0 cm 3 molecule-~ s-~, for the O(~D) reactions with H2, D 2 and HD at 298 K were determined to be 1.2 \_\_\_ 0.1, 1.1 + 0.1, and 1.2 + 0.1, respectively. The H atom yield in the O(~ D) + HD reaction, relative to that in the O(ID) + H 2 reaction, was measured to be