Foundational Thermodynamics: Entropy and Chemical Equilibria

Understanding why reactions happen and how far they proceed is central to chemistry. This course provides a clear, conceptual introduction to the powerful principles of entropy and chemical equilibrium. By the end of this course, you will be able to use thermodynamic data to calculate changes in free energy and accurately predict the direction and extent of chemical change. What you'll learn: * Understand the conceptual meaning of entropy and its role as a state function in the Second and Third Laws of Thermodynamics. * Calculate standard entropy changes (ΔS) for reactions and phase transitions using tabulated thermodynamic data. * Master the concept of Gibbs Free Energy (ΔG) and use it to determine the spontaneity and feasibility of a chemical process under various conditions. * Analyze chemical equilibrium using the equilibrium constant (K) and apply Le Chatelier's Principle to predict system responses to stress. * Apply the fundamental relationship between Gibbs Free Energy and the equilibrium constant (ΔG = -RT ln K). The course begins with foundational definitions of thermodynamic systems and state functions, gradually building toward complex calculations involving free energy minimization and equilibrium ratios. We emphasize the mathematical interpretation of these core chemical principles. This course is designed for absolute beginners in physical chemistry and thermodynamics. No prior knowledge of advanced calculus or thermodynamics is required, only basic algebra skills. Start reading today to unlock the secrets governing chemical change.