Constant time interval method for analysis of reaction rate data

In the study of chemical kinetics, many integrated reaction rate equations have the form In [f(A) + a] = bt + c, where a, b, and c are constants and f(A) is some function of the concentration of a reactant (or product) which can be calculated from the data. The left-hand side of this equation cannot be graphed versus time if the constant a is unknown. However, it is shown that f(A2) varies linearly with f(A₁) if A₂ is the concentration of reactant measured at a constant time interval later than A₁. The constants a and b can be determined from the linear graph. A number of specific examples are considered.