General approach to calculating explosion limits for the reaction of hydrogen oxidation

An analytical formula governing all the three chain-explosion limits inhere nt in hydrogen oxidation is derived using a general approach. The previous equations for the first and second limits derive from this formula as some approximation. The results of calculations by the proposed formula are comp ared with the exact numerical data. The role of nonlinear reaction steps is discussed, and a general concept underlying the analysis of the kinetic be havior in the gap between the second and the third chain explosion limits i s developed.