26.5-1. Murphree Efficiency and Actual Number of Trays. For the distillation of heptane and ethyl benzene in Problem 26.4-2, the Murphree tray efficiency is estimated as 0.55. Determine the actual number of trays needed by stepping off the trays using the tray efficiency of 0.55. Also, calculate the overall tray efficiency Eo. HERE IS THE PARAMETERS FOR 26.4-2, ANY HELP WITH 26.5-1 WILL BE GREATLY APPRECIATED 26.4-2. Rectification of a Heptane-Ethyl Benzene Mixture. A saturated liquid feed of 200 mol/h at the boiling point containing 42mol% heptane and 58% ethyl benzene is to be fractionated at 101.32kPa abs to give a distillate containing 97mol% heptane and a bottoms containing 1.1mol% heptane. The reflux ratio used is 2.5:1. Calculate the mol/h distillate, mol/h bottoms, theoretical number of trays, and the feed tray number. Equilibrium data are given below at 101.32kPa abs pressure for the mole fraction n-heptane xH and yH : Ans. D=85.3mol/h,W=114.7mol/h,9.5 trays + reboiler, feed on tray 6 from top