Consider the methanol (1) + ethanol (2) system at 101.325 kPa. Using Raoult’s Law, predict the sys tem temperature and vapor-phase composition for this mixture and provide a Txy plot for this mixture. Compare the results of your modeling with the set of experimental data provided for this system in Table P10-17. Plot the data (as points) on the same plot as your model. Is this system properly modeled by Raoult’s Law? Why or why not?

 

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TABLE P10-17 Experimental data for the methanol (1) + ethanol (2) system at 101.325 kPa. T[K] 351.45 349.75 348.15 346.75 345.45 344.85 343.15 341.75 340.85 340.05 339.75 338.95 338.75 337.75 0 0.134 0.242 0.320 0.401 0.435 0.542 0.652 0.728 0.790 0.814 0.873 0.910 1 Y₁ 0 0.183 0.326 0.428 0.529 0.566 0.676 0.759 0.813 0.858 0.875 0.919 0.937 1 Based on data from Amer H H., Paxton R R., van Wink le M., Ind Eng.Chem., 48(1), 142-146, 1956.