ChEn 2001, Homework #7Due Friday, November 13, 2009Problem 1.Use Raoult’s Law to construct a T-x-y diagram for toulene and ethylbenzene at 600mmHg. The x,y should refer to the mole fraction of the more volatile component.Problem 2.Consider an equilibrium flash of isopentane and isopropanol. The feed to the flashunit is 60 mol/hr isopentane and 40 mol/hr isopropanol. Answer the following questions about thefollowing possible ways to operate the flash tank:1. If the flash tank operates at 55◦C and atmospheric pressure, what is the composition andflow rates of the outlet streams?2. If the flash tank operates at 40◦C and the liquid flow rate is 40 mol/hr, what is the pressureof the tank?3. If the gas flow rate is 40 mol/hr and the system operates at atmospheric pressure, what isthe temperature of the flash tank?Problem 3 (Murphy 5.37).A natural gas stream (100 kmol/h) contains 98 mol% methane and2 mol% hydrogen sulfide (H2S). H2S is a highly toxic gas. The concentration of H2S in the naturalgas stream must be reduced to 0.01 mol% H
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