Disequilibrium chemistry refers to the study of chemical reactions that occur under conditions where the system is not at thermodynamic equilibrium. This can include processes such as rapid reactions, non-equilibrium concentrations of reactants, or reaction pathways that deviate from the traditional equilibrium state. Disequilibrium chemistry is important in understanding dynamic processes in various fields such as atmospheric chemistry, biochemistry, and astrochemistry. Researchers in this area seek to investigate the kinetics and mechanisms of reactions that occur in these non-equilibrium conditions, as well as the implications for natural systems and industrial processes.