This document discusses chemical equilibrium in homogeneous systems. It defines chemical equilibrium as a state where the concentrations of reactants and products remain constant over time, despite reactions continuing on a molecular level. The chemical equilibrium constant K is introduced, which relates the concentrations of products and reactants at equilibrium. Factors that can influence chemical equilibrium such as concentration, temperature, pressure, and catalysis are described. Equations for calculating the equilibrium constant Kc in terms of molar concentrations and Kp in terms of partial pressures are also provided.