Physical Chemistry Chapter 7 The phase rule SO iquid Critical riple i point point Solid Liquid Gas vapor I stable stable stable Solid-liquid phase boundary: a plot of the freezing point at various p Liquid-vapor phase boundary: a plot of the vapor P of li quid again nst T Solid-vapor phase boundary: a plot of the sublimation vapor P against T 1313 The Phase Rule Solid-liquid phase boundary: a plot of the freezing point at various P. T3 Tc P T Gas stable Liquid stable Solid stable  Tf Tb T Triple point Critical point vapor liquid solid Liquid-vapor phase boundary: a plot of the vapor P of liquid against T. Solid-vapor phase boundary: a plot of the sublimation vapor P against T. Physical Chemistry Chapter 7