Problem 1. A liquid feed consisting of 21 molen-pentane and 22 molen-hexane is fed to a distillation column. The flow rate and temperature of the liquid feed are Flb moles/hr and TF C, respectively. The total pressure of the column is at P atm. A liquid distillate contains 999 molen-pentane. A total condenser is used. The reflux is a saturated liquid. The external reflux ratio is L/D-R. The liquid bottom product from the partial reboiler contains 99.8 mole % n-hexane, The heat capacities of liquidn-pentane and liquid n-hexane are assumed constant, as shown below CPL. = 39.7 cal/gmole" Cpl.c. -51.7 cal/gmole/C Data for Watson Correlation I Critical Temperature, Heat of vaporization at Temperature, TC T. 2. cal/g-mole 1. n-pentane 36.07 469.8 6309.7514 2 n-hexane 68.74 507.9 6895.3155 Normal Bolling Tal.K Operation conditions of a distillation column Feed, moles Z1, n.pentane 22 - hexane F. Feed rate Ibmolet P. Column Pressure, at External Reflux Ratio, R 35 59 60 50 35 61 47 65 41 40 50 65 2.500 1.983 1,084 TF, Feed Temperature C 38 32 20 23 2,395 930 1.720 1.532 3.5 2.3 1.9 3.4 2.8 2.5 2.7 39 53 3 1.71 3.09 3.56 1.61 3.79 2.72 3.02 2.41 1.88 3.73 37 20 24 47 53 53 37 22 37 44 53 47 47 63 57 51 3.1 2.7 3.1 1.251 1.918 892 1.170 1,503 1.731 3.0 43 42 42 20 2.48 2.4 2.9 49 3.40 a. Evaluate the temperature of the distillate (TD) and the temperature of the bottom product (TB) by finding the boiling temperature of n.pentaine and n-hexane at Patm, using McWilliams' equations b. Find the flow rate of the distillate (D), the flow rate of the bottom product (B), and the flow rate of the vapor in the rectifying section (V) in boleh c. Find the enthalpy of the foed stream (hu), the enthalpy of the distillate stream (h), and the enthalpy of the bottom product stream (h) in cale-mole, using the feed temperature as a reference temperature d. Find the condenser duty (0) and the reboiler duty (O.) in kcal/hor, using Watson Correlation and the given data