The application of thermodynamics and molecular theory in chemical engineering. Topics include thermodynamics of phase equilibria, Gibbs phase rule, solutions of non-electrolytes and strong electrolytes (activity and osmotic coefficients), entropy and information. Part of the course will deal with applications like systems for power production, heating and cooling and pumps and compressors. The primary goal of chemical thermodynamics is the physical explanation of the fundamental principles governing the variety of chemical phenomena taking place in the work around us. The goal of this course is to give students a conceptual understanding of the main principles of thermodynamics. Topics include: the concept of entropy; the Clausius, Gibbs, Boltzmann and Shannon definition of entropy; entropy and information; Maxwells demon; the Boltzmann distribution law; the Maxwell-Boltzmann speed distribution; Gibbs and Helmholtz free energy; the chemical potential; Gibbs-Duhem and Euler equation; the Gibbs phase rule; entropy of mixing and Gibbs paradox; phase diagrams, the Flory- Huggins phase diagram; spontaneous and non-spontaneous processes; thermodynamics of chemical reactions; thermodynamics of osmosis and reverse osmosis, entropy and irreversible phase transitions; introduction in thermodynamics of irreversible processes; introduction in statistical thermodynamics. CBE 201 was previously entitled "Thermodynamics" during Falls of 2009, 2010, 2011, 2012, 2013 and 2014.