This lecture covers the engineering of chemical reactions, focusing on the design and analysis of chemical reactors such as Packed Bed Reactors (PBR) and Continuous Stirred Tank Reactors (CSTR). Topics include intramolecular dehydration, gas-solid catalyzed phase, ideal gas law assumption, and the comparison of conversion rates between PBR and CSTR. MATLAB is used for academic purposes to simulate reaction profiles and calculate key parameters.