Chemical Equilibrium: Reactions and Constraints

This lecture discusses the concept of chemical equilibrium, focusing on how reactions evolve based on changes in temperature, pressure, and concentration. It covers the qualitative treatment of balance, the principle of Le Chatelier, and the recognition of buffer solutions. Through examples involving the equilibrium constant and molar ratios, the instructor illustrates how to predict the direction in which a reaction will tend. Emphasis is placed on understanding the factors that influence equilibrium shifts and the role of conjugate acid/base couples in maintaining buffer solutions.