You are a chemical engineer working at Regional Chemical Company. The upper management has done some preliminary cost estimates and is looking to manufacture mixtures of chloroform and   methanol. The end use of this mixture would be for lipid extraction in the biological field. Your boss, thinking about the hydroxyl group on the methanol and the three chlorines on the chloroform, opines that the mixture is probably very non-ideal. Since you are standing next to her, she turns to you and asks, “Can you plot for me the partial molar enthalpies of this mixture as a function of composition at 50°C?” Enthusiastically, you say “yes” and wander off back to your office.

After a half hour of searching, you come up with enthalpy of mixing data for this mixture at 50°C, presented in Table P9-13.

Please provide the graphs that the boss has asked you for. Put both curves on the same graph.

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TABLE P9-13 Enthalpy of mixing data for the methanol (1) + chloroform (2) system at 50°C. AH (J/mol) 0 -96.8 -194.4 -283.4 -297.4 -364.6 -369.5 -400.3 -407.4 -409.9 -394.8 -369.1 -364.6 -328.9 -316.2 -287.2 -284.3 -255.7 -237.5 -208.5 -189.4 -90.1 -87.9 31.2 51.5 194.3 241.0 390.3 524.5 587.2 573.3 590.9 523.9 489.1 334.0 186.3 33.9 0 0.0256 0.0559 0.0930 0.0974 0.1374 0.1447 0.1755 0.2014 0.2175 0.2568 0.2860 0.2921 0.3184 0.3272 0.3456 0.3468 0.3622 0.3740 0.3870 0.3963 0.4431 0.4433 0.4953 0.5053 0.5655 0.5908 0.6563 0.7331 0.7855 0.7909 0.8563 0.9132 0.9224 0.9578 0.9797 0.9967 1