Physical and analytical mathematical modeling techniques considerably enhance study of reactions’ mechanisms and optimization of experimental planning of reacting systems. Unlike physical models that are based on the principle of similarities, analytical models are developed from the reaction mechanism principles. When properly conceptualized, the developed models are effective prognoses tools to predict inter and intra relationship of technological parameters in any physical or reacting systems and environment. The ability to develop models will considerably optimize experimental planning procedures, reduce the research time and cost and can adequately authenticate the adopted research mechanism and hypotheses. This book is recommended for students, researchers and engineers.