This is Part E of a series of papers that present the kinetic results computed for a hypothetical simulated process and experimental data for the thermal decompositions of calcium carbonate and ammonium perchlorate. The results show that model-fitting techniques are successful in correctly describing the decomposition of solids when assuming multi-step kinetic models. The multi-heating rate data should be used for the kinetic calculations because the application of the single-heating rate data may fail to disclose the complexity of the process. The comparison of the kinetic parameters obtained from isothermal and non-isothermal experiments is presented and discussed. The results indicate that the proper consideration of the experimental conditions at which the reaction has been investigated should be taken into account for a correct interpretation of kinetic data of solid-gas reactions.