| Autor: |
Wang, J. J., Keyser, L. F. |
| Zdroj: |
The Journal of Physical Chemistry - Part A; July 2001, Vol. 105 Issue: 26 p6479-6489, 11p |
| Abstrakt: |
The yield of HCl from the OH + ClO reaction has been determined at 1 Torr total pressure by using the discharge-laminar-flow technique with resonance fluorescence, infrared diode laser spectrometry, and ultraviolet absorption spectrometry detection methods. A known amount of OH is added to a large excess of ClO and the reaction is allowed to go to completion. Under these conditions, the yield is just the ratio of [HCl] produced to initial [OH]. The yield or branching ratio measurement reduces to a measurement of two concentrations; knowledge of the total rate constant or of the branching rate constants is not required. The results are 9.0 ± 4.8% independent of temperature between 218 and 298 K. The errors given are two standard deviations. The results are also independent of the OH source: F + H2O or H + NO2. Interference from secondary chemistry is minimized by extrapolating a plot of observed yields to zero initial [OH]. Numerical simulations are used only to check for interference from secondary chemistry and to validate the extrapolation procedure. |
| Databáze: |
Supplemental Index |
| Externí odkaz: |
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