1. A mixture consisting of 72.54 g of benzene and 52.44 g of toluene is isothermally compressed at 100C from 0.50 bar to 2.50 bar. a) Describe what happens to the mixture as the process proceeds. In the initial state, how many degrees of freedom does the system have? b) What is the minimum pressure at which two phases coexist in the mixture and what is the concentration of each phase? c) What is the maximum pressure at which two phases coexist in the mixture and what is the concentration of each of them? 2. When tin and lead are mixed together they form the following diagram a) What type of diagram is it? Describe each zone of the diagram. b) What are the melting temperatures of pure lead and tin? c) What phases are there and what is the composition of each point shown in the diagram? 350 A 300 Temperature / C 250- 200 00 B 150- 0 . 10 20 30 40 50 60 70 80 90 100 Mass Fraction Sn (%)