Abstract
A ``statistical'' theory of chemical reaction rates based on ``scattering theory'' in the strong coupling approximation is presented. The theory is developed explicitly for reactions involving the dissociation and recombination of a diatomic molecule in the presence of an atomic catalyst but is also readily applicable to other reactions. The theory formally includes Wigner's theory of three‐body recombination and the classical theories of both recombination and dissociation. A limited comparison with experiment shows reasonable agreement.