vapor pressure curve

A vapor pressure curve shows how the pressure exerted by a liquid's vapor in equilibrium with its liquid phase changes with temperature. As temperature rises, molecules gain energy and escape more easily into the vapor phase, increasing vapor pressure. The curve demonstrates this relationship across a range of temperatures, illustrating how liquids become more volatile as they warm. At specific points, the vapor pressure equals the atmospheric pressure, leading to boiling. This concept helps in understanding boiling points, evaporation, and the stability of liquids under different conditions.