Using the phase diagram of iron below, draw the Gibbs free energy, enthalpy and entropy curves for two phases of your choice at a pressure of 1 bar. Make sure to label the temperature range correctly and the temperature at which a transition occurs.

T (C) 3000 2500 2000 1500 1000 Vapor -10 10 10 10 -8 6-iron (BCC) 7-iron (FCC) a-iron (BCC) Liquid -2 10 10 10 Figure 1: 1538 C 1394 C 910 C 1 10 100 P (bar)