The oxidation of HI at low temperatures and the heat of formation of HO2
- 1 April 1983
- journal article
- research article
- Published by Wiley in International Journal of Chemical Kinetics
- Vol. 15 (4) , 323-339
- https://doi.org/10.1002/kin.550150403
Abstract
The kinetics of the oxidation of hydrogen iodide (HI + O2) at low temperature (414–499 K) in the gas phase by the method of iodination kinetics is complicated by a heterogeneous reaction between hydrogen iodide and oxygen. Present work leads to an upper limit for the bimolecular rate constant k1 for the first and rate‐determining step equation image These data are combined with an estimated A factor A1 = 109.3±0.2 L/mol·s (assuming a tight linear I···H···O— transition state), to calculate the lower limit of the activation energy for the forward reaction E1. This leads to a minimum value for the heat of formation of the HO2 radical, ΔHf298°(HO2) < 3.0 kcal/mol.Keywords
This publication has 18 references indexed in Scilit:
- The kinetics and thermochemistry of chemical oxidation with application to combustion and flamesProgress in Energy and Combustion Science, 1981
- Kinetic study of the equilibrium HO2 + NO .dblarw. OH + NO2 and the thermochemistry of HO2Journal of the American Chemical Society, 1980
- Modeling Chemical Processes in the StratosphereAnnual Review of Physical Chemistry, 1979
- Kinetics of Thermal Gas Reactions with Application to Stratospheric ChemistryAnnual Review of Physical Chemistry, 1979
- Some unresolved problems in oxidation and combustionAccounts of Chemical Research, 1979
- NOxcatalytic ozone destruction: Sensitivity to rate coefficientsJournal of Geophysical Research, 1977
- Kinetics of hydrogen peroxide pyrolysis by molecular-beam mass spectrometryInternational Journal of Mass Spectrometry and Ion Physics, 1971
- Mass Spectrometry of the HO2 Free RadicalThe Journal of Chemical Physics, 1962
- The Kinetics of Oxidation of HBrThe Journal of Physical Chemistry, 1959
- Proton Magnetic Resonance Studies of Chloroform in Solution: Evidence for Hydrogen BondingThe Journal of Chemical Physics, 1955