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O(3P) + HOONO2 → products: Temperature-dependent rate constant

✍ Scribed by Jenq-sian Chang; Paula L. Trevor; John R. Barker

Publisher
John Wiley and Sons
Year
1981
Tongue
English
Weight
539 KB
Volume
13
Category
Article
ISSN
0538-8066

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✦ Synopsis

Abstract

The title reaction was studied in a stirred‐flow reactor at six temperatures ranging from 228 to 297 K and for pressures near 2 torr. The experiments were performed under O‐atom‐rich conditions, and the HOONO~2~ concentration was monitored with a modulated molecular‐beam mass spectrometer. O‐atom concentrations were measured by titration with NO~2~ and by monitoring the portion of O~2~ dissociated in the microwave discharge. A weighted least‐squares analysis gives (k ± 1σ) = (7.0 ± 12.2) × 10^−11^ exp(‐3369 ± 489/T) cm^3^/s, where the uncertainties are 1 standard deviation (six temperatures) the covariance was σ~AB~ = 5.97 × 10^−8^. Due to the possible presence of systematic errors, the uncertainty in the rate constant could be as great as a factor of 2 over the entire temperature range.

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H + HOONO2 → products: Temperature-depen
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