Hydroxyl Radical Kinetics by Kinetic Spectroscopy. V. Reactions with H2 and CO in the Range 300–500°K

The reactions of OH with H2 and CO were studied by the flash-photolysis–kinetic-spectroscopy technique over the temperature range 300–500°K. At both ends of this range it was verified that the reactions are first order in OH and H2 or CO. The Arrhenius parameters and their 95% confidence limits, as determined from least-squares fits of the data, follow: For H2+OH→H+H2O, E = 4020 ± 180 cal/mole and logA (cc/mole·sec) = 12.61 ± 0.10; for CO+OH→CO2+H, E = 230 ± 140 and logA = 11.10 ± 0.07.