Solid 4 Liquid Equilibria in Less Ideal Mixtures

In addition to solid phase transitions and the combination of (solid + liquid) with (liquid + liquid) equilibria, solid solutions can form and a variety of 

1 From the following data, sketch the phase diagram for nitrogen at low 

2 Solid monoclinic sulfur spontaneously converts to solid rhombic sulfur at 298.15 K and 0.101 MPa pressure. For the conversion process  

3 The vapor pressures of solid and liquid hydrogen cyanide are given by 

Calculate (a) the molar enthalpy of sublimation, (b) the molar enthalpy of vaporization, (c) the molar enthalpy of fusion, (d) the triple point temperature and pressure, and (e) the normal boiling point for HCN. E8.4 Solid O2 has a solid phase transition at 23.66 K and 0.101 MPa pressure. The molar enthalpy of transition is 93.81 J mol-1, a02 (stable below 23.66 K) has a density of 1,470 g em-3 while 0O2 (stable above 23.66 K) has a density of 0.702 g em-3. For the process at 23.66 K and 0.101 MPa pressure 

---