Reaction Engineering is a branch of chemical engineering that focuses on the design and optimization of chemical reactors. It involves understanding the chemical reactions that occur within these reactors and how to control the conditions to maximize product yield and efficiency. Engineers in this field analyze factors such as temperature, pressure, and concentration to develop models that predict reaction behavior. This knowledge is essential for industries like petrochemicals, pharmaceuticals, and biotechnology, where efficient and safe production processes are crucial for economic viability and environmental sustainability.