Rate Coefficient Measurements for the Reaction OH + ClO → Products

The rate coefficient for the reaction OH + ClO → products (1) was measured under pseudo-first-order conditions in OH. A discharge flow system was used to produce ClO, and its concentration was measured by UV/visible absorption. OH was produced by pulsed laser photolysis of O 3 (or ClO) at 248 nm in the presence of H 2 O and was monitored by laser-induced fluorescence. The value of k 1 between 234 and 356 K is given by k 1 ( T ) = (8.9 ± 2.7) × 10 -12 exp[(295 ± 95)/ T ] cm 3 molecule -1 s -1, where uncertainties are 95% confidence limits and include estimated systematic uncertainties. Our value is compared with those from previous investigations.