For a pure component, on the vapor pressure curve, vapor and liquid
phases coexist in equilibrium. True or False
True.
In order to determine whether the vapor and liquid phases coexist in equilibrium on the vapor pressure curve for a pure component, we can use the concept of phase equilibrium.
Phase equilibrium refers to the state at which two phases (in this case, vapor and liquid) coexist in equilibrium at a specific temperature and pressure. In the case of a pure component, as its temperature increases, the vapor pressure also increases.
On the vapor pressure curve, the points represent the temperature and pressure conditions at which the vapor and liquid phases coexist in equilibrium. At these specific conditions, the vapor pressure of the liquid phase is equal to the pressure exerted by the vapor phase.
Therefore, on the vapor pressure curve, the vapor and liquid phases coexist in equilibrium. Thus, the statement is true.