Enthalpy of vaporization of water is the energy required to convert liquid water into water vapor at constant temperature and pressure. This property is crucial for understanding water’s behavior in various applications. Water’s unique properties, such as hydrogen bonding, contribute to its high enthalpy of vaporization. External factors like temperature, pressure, and surface area also influence its value. Measurement techniques, including calorimetry and ebulliometry, determine this property. The enthalpy of vaporization finds practical applications in energy transfer systems, comfort systems, and understanding concepts like latent heat, boiling point, and evaporation.