Pressure Temperature Phase Diagram. The curve between the critical point and the triple point shows the methane boiling point with changes in pressure. At 37399c particles of water in the gas phase are moving very very rapidly.
These diagrams indicate the physical states that exist under specific conditions of pressure and temperature and also provide the pressure dependence of the phase transition temperatures melting points sublimation. Fluid phase behavior. A pressure temperature phase diagram for zrsio 4 available empirical and experimental constraints and equilibrium calculations on the conditions under which phase transformations of zrsio 4 occur are summarised in fig.
This line crosses the line between points b and d at the melting point of the substance because solids normally melt at the temperature at which the solid and liquid are in equilibrium at 1 atm pressure.
That means that at 1 atmosphere pressure carbon dioxide will sublime at a temperature of 78c. The phenomenological thermodynamic theory describing this diagram explains the heat cold and pressure denaturations in a. The phase diagram for carbon dioxide. Important points and phase coexistence lines are discussed.