A TEST OF THE VALIDITY OF STEADY STATE AND EQUILIBRIUM APPROXIMATIONS IN CHEMICAL KINETICS

where the concentrations of the species are denoted as XI, ..., x"; and the corresponding time derivatives are denoted by x,, ...,i,,. In general these differential systems are difficult to solve analytically, so approximate or numerical solutions are often used. A general method for obtaining such appmximate solutions is to suppose that some of the functions f,, ..., fi are equal to zem. The system thus becomes