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The gas‐phase reaction of hydrazine and ozone: A nonphotolytic source of OH radicals for measurement of relative OH radical rate constants
Author(s) -
Tuazon Ernesto C.,
Carter William P. L.,
Atkinson Roger,
Pitts James N.
Publication year - 1983
Publication title -
international journal of chemical kinetics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.341
H-Index - 68
eISSN - 1097-4601
pISSN - 0538-8066
DOI - 10.1002/kin.550150704
Subject(s) - chemistry , radical , reaction rate constant , cyclohexane , dimethyl ether , ether , ozone , photochemistry , methanol , analytical chemistry (journal) , organic chemistry , kinetics , physics , quantum mechanics
The homogeneous gas‐phase reaction of N 2 H 4 with O 3 in air atmospheric pressure has been used to generate OH radicals in the dark, allowing the determination of relative OH radical rate constants for compounds which photolyze rapidly. This technique was first validated by determining the OH radical rate constant ratios for n ‐butane/cyclohexane and methanol/dimethyl ether, both of which are in excellent agreement with the literature values. The rate constant for the reaction of OH radicals with methyl nitrite at 300 ± 3 K was then determined relative to those for the reaction of OH radicals with n ‐hexane and dimethyl ether. The resulting rate constant of 1.8 × 10 −13 cm 3 /molecule·s is about seven times lower than those of previous measurements which employed a different nonphotolytic relative rate method.