OH + HO2 -> O2 + H2O

k = 1.45E+13 exp(+500 cal/mol /RT)

+ 5.00E+15 exp(-17330 cal/mol /RT) cm3/mol s

SOURCE:

Keyser, L.F. (1988) J. Phys. Chem. 92, 1193.

Hippler, H., Neunaber, H., and Troe, J. (1995) J. Chem. Phys. 103, 3510. (high T)

COMMENTS:

Served as an optimization variable in GRI-Mech 1.2 and 2.1 releases. The rate coefficient was not changed.

Expressed as the sum of two exponentials, reactions 87 and 287.

The high temperature expression was added in version 3.0.  Served as an optimzation variable in 3.0.  The optimized rate constants are 0.5 times the starting values.

______________________________________________________________________
    Temp      delta-S     delta-H      kf          kr         Keq
     (K)    (cal/mol K)  (kcal/mol) ----(mol,cm3,s)-----
______________________________________________________________________

     300        -4.5       -70.2    3.36E+13    2.35E-37    1.43E+50
     500        -4.8       -70.3    2.40E+13    4.94E-17    4.86E+29
    1000        -5.2       -70.6    1.94E+13    9.93E-02    1.96E+14
    1500        -5.4       -70.8    3.21E+13    2.32E+04    1.38E+09
    2000        -5.5       -71.0    8.03E+13    2.22E+07    3.61E+06
    2500        -5.5       -71.1    1.69E+14    1.67E+09    1.01E+05
    3000        -5.5       -71.1    2.89E+14    3.10E+10    9.33E+03
_____________________________________________________________________