Competitive kinetics study of sulfide oxidation by chlorine using sulfite as reference compound

- Sulfide chlorination kinetics was studied using the competitive method.
- Sulfite was selected as the reference compound.
- The sulfide oxidation in the pH range 6-12 is mainly due to HS− oxidation by ClOH.
- Kinetic constant between ClOH and HS− is evaluated at 1.2 × 109 L mol−1 s−1.
- Numerical resolutions are performed to check the reliability.