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Equilibrium constant for the reaction ClO + O 2 <−> ClO · O 2
Author(s) -
DeMore W. B.
Publication year - 1990
Publication title -
geophysical research letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.007
H-Index - 273
eISSN - 1944-8007
pISSN - 0094-8276
DOI - 10.1029/gl017i013p02353
Subject(s) - equilibrium constant , chemistry , photodissociation , reaction rate constant , analytical chemistry (journal) , thermodynamics , physics , kinetics , photochemistry , environmental chemistry , quantum mechanics
Photolysis of Cl 2 /Cl 2 O/O 2 mixtures at 197 K has been used to place an upper limit of 4×l0 −18 cm 3 on the equilibrium constant for the ClO + O 2 <––> ClO·O 2 reaction at that temperature. This value is three orders of magnitude below the current NASA recommendation [DeMore et al., 1990]. Estimating S°(ClO·O 2 ) as 73 cal/mol‐K, the bond energy for the complex is less than 7.7 kcal/mole.
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