Answer Happy

Problem 1: A mixure of 35 mol% methanol and rest of water is in
equilibrium with its vapor at 88oC, determine the (a) pressure and
(b) composition of the vapor
Problem 2: Humid air at 30 oC and 100% relative humidity. By
using psychometric chart; 1. Estimate moisture content, wet-bulb
temperature, humid volume, dew point, and specific enthalpy 2.
Estimate amount of water in 200 m3 of air at these conditions 3.
Comment of obtained wet-bulb and dew temperatures
Problem 3: Use either Raoult’s law or Henry’s law to estimate
the mole fraction of dissolved ethane in a gas containing 3.00
mole% ethane is in contact with water at 25 oC and 20.0 atm
Problem 4: A mixture of 60 wt% water, and the balance MIBK and
acetone at 25 oC and 1 atm is fed to a settler where two phases
formed. If acetone is 15 wt% in MIBK rich phase, find the
composition of the feed and the two formed phases
Problem 5: 1. Using the T-x,y diagram, estimate the bubble-point
temperature and the equilibrium vapor composition associated with a
30 mole% benzene–70 mole% toluene liquid mixture at 1 atm. If the
mixture is steadily vaporized until the remaining liquid contains
20% benzene, what is the final temperature? 2. Using the T-x,y
diagram, estimate the dew-point temperature and the equilibrium
liquid composition associated with a vapor mixture of benzene and
toluene containing 40 mole% benzene at 1 atm. If condensation
proceeds until the remaining vapor contains 60% benzene, what is
the final temperature?
115 110 105 100 1400 1300 1200 Vapor 95 Temperature (°C) Liquid 90 85 Pressure (mm Hg) 1100 1000 900 Liquid 80 Vapor 800 700 75 70 600 500 65 0 1.0 0 1.0 0.2 0.4 0.6 0.8 Mole fraction benzene P = 1 atm 0.2 0.4 0.6 0.8 Mole fraction benzene T = 100°C
Table B.8 Specific Enthalpies of Selected Gases: SI Units Ĥ (kJ/mol) Reference state: Gas, Pref 1 atm, Tref 25°C т Air O2 N2 CO CO2 H2 0 25 100 200 300 400 500 600 700 800 900 1000 1100 1200 1300 1400 1500 -0.72 0.00 2.19 5.15 8.17 11.24 14.37 17.55 20.80 24.10 27.46 30.86 34.31 37.81 41.34 44.89 48.45 -0.73 0.00 2.24 5.31 8.47 11.72 15.03 18.41 21.86 25.35 28.89 32.47 36.07 39.70 43.38 47.07 50.77 -0.73 0.00 2.19 5.13 8.12 11.15 14.24 17.39 20.59 23.86 27.19 30.56 33.99 37.46 40.97 44.51 48.06 -0.72 0.00 2.16 5.06 7.96 10.89 13.83 16.81 19.81 22.85 25.93 29.04 32.19 35.39 38.62 41.90 45.22 -0.73 0.00 2.19 5.16 8.17 11.25 14.38 17.57 20.82 24.13 27.49 30.91 34.37 37.87 41.40 44.95 48.51 -0.92 0.00 2.90 7.08 11.58 16.35 21.34 26.53 31.88 37.36 42.94 48.60 54.33 60.14 65.98 71.89 77.84 H2O -0.84 0.00 2.54 6.01 9.57 13.23 17.01 20.91 24.92 29.05 33.32 37.69 42.18 46.78 51.47 56.25 61.09
Table B.9 Specific Enthalpies of Selected Gases: American Engineering Units (Btu/lb-mole) Reference state: Gas, Pref 1 atm, Tref = 77°F T Air O2 N2 H2 CO CO2 HO 32 77 100 200 300 400 500 600 700 800 900 1000 1100 1200 1300 1400 1500 1600 1700 1800 1900 2000 -312 0 160 858 1563 2275 2993 3719 4451 5192 5940 6695 7459 8230 9010 9797 10590 11392 12200 13016 13837 14663 -315 0 162 875 1602 2342 3094 3858 4633 5418 6212 7015 7826 8645 9471 10304 11142 11988 12836 13691 14551 15415 -312 0 160 857 1558 2265 2976 3694 4418 5150 5889 6635 7399 8151 8922 9699 10485 11278 12080 12888 13702 14524 -310 0 159 848 1539 2231 2925 3621 4319 5021 5725 6433 7145 7861 8581 9306 10035 10769 11509 12254 13003 13759 -312 0 160 859 1564 2276 2994 3720 4454 5195 5945 6702 7467 8239 9021 9809 10606 11409 12220 13036 13858 14688 -394 0 206 1132 2108 3129 4192 5293 6429 7599 8790 10015 11263 12533 13820 15122 16436 17773 19119 20469 21840 23211 -361 0 185 996 1818 2652 3499 4359 5233 6122 7025 7944 8880 9831 10799 11783 12783 13798 14831 15877 16941 18019