Shock Tube Kinetic Study for the Reaction of H Atoms with SO₂: Comparison between Experiments and Theory

The bimolecular rate constant for the reaction of H + SO 2 → products (1) was determined to be k 1 = 1.0 × 10 -11 exp(−66.1 kJ·mol -1 / RT ) cm 3 molecules -1 s -1 in the temperature range of 1400−2200 K by measuring the temporal profiles of H atoms behind the reflected shock of C 2 H 5 I/SO 2 /Ar mixtures. The rate constant obtained in this study is in good agreement with that calculated using the rate constants of the reverse reaction OH + SO → H + SO 2 and is also consistent with the rate constants predicted by the master equation analysis.