In chemical engineering, theories serve as the foundation for understanding and manipulating various processes involved in the production of chemicals and materials. These theories encompass principles of thermodynamics, kinetics, fluid dynamics, and mass transfer, among others. By applying theoretical frameworks, engineers can optimize reactor designs, develop efficient separation techniques, and enhance process control strategies. Moreover, theories aid in predicting the behavior of chemical systems under different conditions, facilitating the design and improvement of industrial processes essential for diverse sectors$,$ including pharmaceuticals, energy, and manufacturing.