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Absolute Rate constants for O + No + N2 → NO2 + N2 from 217–500 K

✍ Scribed by D.A. Whytock; J.V. Michael; W.A. Payne

Publisher
Elsevier Science
Year
1976
Tongue
English
Weight
468 KB
Volume
42
Category
Article
ISSN
0009-2614

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✦ Synopsis

Flash photolysis of NO coupled with time resolved detection of 0 via resonance fluorescence has been used to obtain rate constants for the reaction 0 + NO f N2 --, NO2 + Na ar temperatures from 217 to 500 K. The measured rate constxrts obey the Arrhenius equation k = (is.5 + 2.0) X 1O-33 -2 exp[(ll60 i 70)/l-987 T] cm6 molecule s-' _ An equally accept-abIe equatron describing the temperature dependence of k is k = 3.80 X 10-27/T1-81-cm6 molecule-2 s-r . These results are discussed and compared with previous work. I. htroduction * We calculate, from the intercepts of fig. 1 in ref. [ 191 and the pressures listed, that k(296 K) = 5.60 X 10m3* cm6 moIecuId2 s-' and k(241 K) = 9.96 cm6 molecule-2s-x, which yields E = 1.48 kcal mole-' . Volume 42, number 3 CHEMICAL PHYSICS LETTERS 1.

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