The Journal of Chemical and Engineering Data is one journal that publishes, among other items, experimental data for vapor–liquid equilibrium of mixtures. Using the Journal of Chemical and Engineering Data (or another journal you have access to), find two sets of experimental data (tabulated) for a binary system: one of constant temperature and the other of constant 

pressure. You will likely need to find two different systems. For the data provided, please do the following. 

A. Plot the data using a plotting software package (Excel, for example). 

B. Identify on the plot the liquid only region, the vapor only region and the two-phase (liquid + vapor) region. 

C. Does this system behave according to Raoult’s Law? How can you tell? Based on the components in the system, would you expect positive or negative deviations from Raoult’s Law?

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Pressure (kPa) 2800 2600 2400 2200 2000 1800 1600 1400 1200 0 0.1 2. 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 Mole fraction n-pentane FIGURE P10-13 The n-pentane (1) + methanol (2) system at 422.6 K.