Freezing free energy change

Lynden-Bell R M, van Duijneveldt J S and Frenkel D 1993 Free-energy changes on freezing and melting ductile metals Mol. Phys. 80 801-14... 

Nucleation of a new phase in the solid state is more complicated than that of nucleation in freezing. Volume difference between the new and old phases causes an elastic misfit term that increases AG. Destruction of existing grain boundaries reduces AG. An expression for the free energy change during nucleation of 3 in a matrix of a is... 

At the normal freezing point, the Gibbs free energy change is zero because the freezing of water under these conditions is an equilibrium, reversible process. 

Consider the crystallization of a melt with a freezing point T, . At the free-energy change per mole associated with the solid-to-liquid... 

FREE ENERGY CHANGE, AS, AND SPONTANEITY Table 15-6 Entropy Effects Associated with Melting and Freezing... 

Based on the change in enthalpy, you would expect that water would always freeze. Use the concepts of entropy and free energy to explain why this phase change is favourable only below 0°C. 

G = H — TS. The direction of spontaneous change at constant pressure and temperature is the direction of decreasing free energy, freezing-point constant kf The constant of... 

---