Rate coefficient temperature dependence and branching ratio for the OH + CIO reaction

Article abstract of DOI:10.1063/1.447414

OH + ClO-->HO2 + Cl (1a) -->HCl + O2 (1b) has been measured in a discharge-flow system with far infrared laser magnetic resonance detection of OH, C1O, and HO2.Measurements were made at low pressure ( 1.0-1.1 Torr) and at temperatures between 219 and 373 K under pseudo-first-order conditions.The measured rate constant is k₁ = (8.0+/-1.4)*10^-12exp<(235+/-46)/T> cm³ molecule^-1 s^-1.The branching ratio at 293 K is, k_1a/k₁ = 0.86+/-0.14.The rate constant to channel (1a) was used with that for the reverse reaction to calculate the heat of formation of HO2.ΔH⁰_f,298(HO2) = 3.0+/-0.4 kcal mol^-1.

Full text of DOI:10.1063/1.447414

Rate coefficient temperature dependence and branching ratio for the
OH+ClO reaction
Alan J. Hills and Carleton J. Howard
Citation: J. Chem. Phys. 81, 4458 (1984); doi: 10.1063/1.447414
View online: http://dx.doi.org/10.1063/1.447414
View Table of Contents: http://jcp.aip.org/resource/1/JCPSA6/v81/i10
Published by the American Institute of Physics.
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