✦ LIBER ✦

Kinetics of the reaction Cl + HO2 = HCl + O2, using molecular modulation spectrometry

✍ Scribed by R. A. Cox

Publisher: John Wiley and Sons
Year: 1980
Tongue: English
Weight: 608 KB
Volume: 12
Category: Article
ISSN: 0538-8066
DOI: 10.1002/kin.550120906

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✦ Synopsis

The rate constant for the reaction (I), C1+ HOz -HCI + 0 2 , was measured using molecular modulation spectrometry to investigate HOz radical kinetics in the modulated photolysis of ClyH2-02 mixtures at 760 torr pressure. HOz was monitored directly in absorption at 220 nm, and k l was determined from computer simulations of the observed kinetic behavior of HOz, using a simple chemical model. The results gave

where k s is the rate constant for the reaction of C1 with Hz. A consensus value of kq gave kl = 6.9 X lo-" cm3/molecule sec, independent of temperature in the range of 274338 K with an overall uncertainty of f50%. The relative importance of reaction (1) for the conversion of C1 to HC1 in the stratosphere is discussed briefly.

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