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Upper bound and probable value of the rate constant of the reaction OH + HO2 yields H2O + O2Discharge-flow experiments at 295 K of the OH + HO2 reaction are described in which excess O3 is added to OH through a movable injector; OH concentration is measured downstream by resonance fluorescence with and without addition of excess NO just upstream of the detector so that both OH concentration and OH concentration + HO2 concentration are determined independently. The data are compared with a computer model involving 12 reaction steps. A simple sensitivity analysis is carried out to establish how errors in the other 'known' rate constants affect the data fit. Best agreement is obtained between computer calculations and experiments when k1 for the OH + HO2 reaction is in the range 2-3 x 10 to the -11th cu cm/s. Values above about 5 x 10 to the -11th are very unlikely whereas those below about 1 x 10 to the -11th are less strongly excluded.
Document ID
19780062018
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
Authors
Chang, J. S.
(Pittsburgh, University Pittsburgh, Pa.; Stanford Research Institute, Menlo Park, Calif., United States)
Kaufman, F.
(Pittsburgh, University Pittsburgh, Pa., United States)
Date Acquired
August 9, 2013
Publication Date
July 27, 1978
Publication Information
Publication: Journal of Physical Chemistry
Volume: 82
Subject Category
Inorganic And Physical Chemistry
Accession Number
78A45927
Funding Number(s)
CONTRACT_GRANT: NGR-39-011-161
Distribution Limits
Public
Copyright
Other

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