Kinetics of the Reaction of Atomic Fluorine with H₂S and Elementary Reactions of the HS Radical

The reaction of H 2 S with atomic fluorine (1) has been studied in a discharge‐flow system at 298 K to generate HS radicals for kinetic investigations. Mass spectrometric detection with single ion counting was employed. The rate constant k (1) was obtained from the rate of H 2 S consumption under the condition [H 2 S] << [F] 0 magnified image It has been shown that the reaction (1) provides a clean source of HS radicals. From the disappearance of HS radicals upon addition of reactants and the formation of products rate constants for the following reactions have been determined: magnified image The reaction of HS with O2 was also studied but it is too slow at room temperature to be followed with the present set up.