A stream of aqueous methanol having 45 mol % CHOH is to be separated into a top product having 96 mol% methanol and a bottom liquid with 4 mol % methanol. The feed at its bubble point and the operating pressure is 101.3 kPa. A reflux ratio of 1.5 is suggested i) Determine the number of ideal trays ii) Find the number of real trays if the overall efficiency is 40%. On which real tray should the feed to be introduced? iii) Determine the temperature for first, last and feed trays for the ideal system. y temp C 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 0.95 1 0.418 0.579 0.665 0.729 0.779 0.825 0.87 0.915 0.958 0.979 1 87.7 84.4 78 75.3 73.1 71.2 69.3 67.6 66 65 64.5