Hydroxyl Radical OH

As for other organics in the atmosphere, the OH radical is a major oxidant for alkenes. Table 6.8 gives the rate constants for some OH-alkene reactions as well as their temperature dependence in Arrhenius form. Several points are noteworthy: (1) the reactions are very fast, approaching 10"1(1 cm3 molecule-1 s~' for the larger alkenes; (2) the rate constants have a pressure dependence; (3) the apparent Arrhenius activation energies are "negative."

TABLE 6.8 Rate Constants and Temperature Dependence" for the Reactions of OH Radicals with Alkenes' at 1 atm Total Pressure of Airb

Was this article helpful?

0 0

Post a comment