2. (8 points) Construct a binary phase diagram for the elements Spartanium (Sp) and Excelsium (Ex) from the following data: 1. The melting point for 5p is 780C 2. The melting point for Ex is 1500C 3. There is an eutectic reaction at 40wt%Ex and 550C 4. The maximum solubility for Ex in Sp is 5 wt\% 5. The maximum solubility for 5p in Ex is 10 wt\% 3. ( 2 points) The following can be determined from a phase diagram: Phases present Composition of phases present Melting temperature of an alloy Amount of phases present in an alloy All of above 4. (7 points) Consider the water-salt phase diagram in Fig. 1. (a) (2 points) What is the temperature and composition of the eutectic point? (b) ( 3 points) What phases are in equilibrium at this point? (c) (2 points) Will you be able to melt the ice on Michigan's roads at temperatures below 21.1C if you add more salt? Why or why not? temperature (C) Figure 1