This document provides information about vapor pressure and Raoult's law. It defines vapor pressure as the pressure exerted by vapors in equilibrium with a liquid at a particular temperature. It then discusses two cases of Raoult's law: (1) for volatile solutions where both components form vapors, and (2) for non-volatile solutions where only the solvent forms vapors. The document provides examples of calculating vapor pressures and compositions using Raoult's law and Dalton's law of partial pressures. It concludes by comparing similarities and differences between Henry's law and Raoult's law.