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Reaction of hydrogen atoms and O 2 ( 1 Δ g )
Author(s) -
Cupitt L. T.,
Takacs G. A.,
Glass G. P.
Publication year - 1982
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.550140506
Subject(s) - chemistry , hydrogen atom abstraction , reaction rate constant , hydrogen , quenching (fluorescence) , electron paramagnetic resonance , radical , analytical chemistry (journal) , photochemistry , kinetics , nuclear magnetic resonance , organic chemistry , fluorescence , physics , quantum mechanics
The reaction of atomic hydrogen with O 2 ( 1 Δ g ) has been investigated as a function of temperature, using a fast discharge‐flow apparatus equipped for EPR detection of free radical species. The rate constant for the overall reaction was measured as (1.46 ± 0.49) × 10 −11 exp(‐4000 ± 200 cal/mol/ RT ) cm 3 /s. Evidence is presented which suggests that the reaction occurs principally via abstraction, H + O 2 ( 1 Δ g ) → OH + O, rather than via physical quenching, H + O 2 ( 1 Δ g ) → H + O 2 (X 3 Σ g − ).