1. In the quenching of triplet exciplexes of quinones by phenols and secondary aromatic amines, hydrogen atom transfer is accomplished with the formation of phenoxyl or aminyl radicals. The radical yields depend on the prototropic equilibrium in the complexes. The complex consisting of neutral particles dissociates into radicals; however, the main channel for the destruction of the complex containing the charged particles is intercombinational conversion to the ground state. 2. The addition of an alcohol to the nonpolar solvent lowers the yield of radicals in quenching triplet exciplexes of quinones by phenols and secondary aromatic amines. Specific solvation of the complex formed after hydrogen atom transfer shifts the prototropic equilibrium in this complex toward the complex with charged particles. Here, the main role is played by solvation of the electron donor introduced into the composition of the triplet exciplex.