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Kinetics and mechanism of the Cl + CO reaction in air
Author(s) -
Hewitt Arlene D.,
Brahan Karen M.,
Boone Gwen D.,
Hewitt Scott A.
Publication year - 1996
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/(sici)1097-4601(1996)28:10<763::aid-kin7>3.0.co;2-l
Subject(s) - chemistry , reaction rate constant , kinetics , reaction mechanism , yield (engineering) , chemical kinetics , molecule , torr , reaction rate , computational chemistry , thermodynamics , organic chemistry , catalysis , physics , quantum mechanics
Long‐path FTIR spectroscopy was used to study the kinetics and mechanism of the reaction of Cl atoms with CO in air. The relative rate constants at 298 K and 760 torr for the forward direction of the reaction of Cl with 13 CO and the reaction of Cl 13 CO with O 2 were k 1 = (3.4 ± 0.8) × 10 −14 cm 3 molecule −1 s −1 and k 2 = (4.3 ± 3.2) × 10 −13 cm 3 molecule −1 s −1 , respectively (all uncertainty limits are 2σ). The rate constant for the net loss of 13 CO due to reaction with Cl in 1 atm of air at 298 K was k Cl+COobs = (3.0 ± 0.6) × 10 −14 cm 3 molecule −1 s −1 . The only observed carbon‐containing product of the Cl + 12 CO reaction was 12 CO 2 , with a yield of 109 ± 18%. Our results are in good agreement with extrapolations from previous studies. The reaction mechanism and the implications for laboratory studies and tropospheric chemistry are discussed. © 1996 John Wiley & Sons, Inc.