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Problem 12.28: Use the UNIFAC equation to do the following calculations for the system methanol(1)- acetic acid(2): a) Calculate the bubble pressure of a solution that contains 80% (by mole) methanol at 80 °C. b) Do you expect the volume of the system to expand or to contract upon mixing the pure components? c) Calculate the fugacity of methanol in solution with acetic acid at xMeOH = 0.8, 80 °C, 0.4 bar. d) Repeat the previous calculation at the bubble pressure of the solution instead of 0.4 bar. e) Calculate the chemical potential of methanol in solution with acetic acid at xMeOH = 0.8, 80 °C, 0.4 bar. The reference state is the pure liquid at 80 °C, 0.4 bar. f) Repeat the previous part if the reference state is the pure liquid at saturation at 80 °C. Additional data: The saturation pressures of methanol and acetic acid at 80 °C are 1.81 and 0.2763 bar, respectively.
A boiler is fired using 200 kg /hr of pure saturated hydrocarbon gas ( Cn Hm ) at atmospheric pressure and 20 oc. The dry analysis of the flue gas which leaves the boiler at atmospheric pressure and 300 oc is CO2 =..
Produce a hypothetical set of performance specifications for such a signaling device.
Calculate the ?S for the transfer of one mole of octane to water using the change in multiplicities assumed for the first shell of water molecules surrounding the molecules.
Calculate packing height required for the desired separation.
The stack gas emerges at 760 mm Hg. Calculate the percentage conversion of hexane, the percentage excess air fed to the burner, and the dew point temperature of the stack gas.
In a 1-1 shell and tube heat exchanger , steam is condensing on the shell side at Tso c and the cold fluid is being heated on the tube side from t1 oc to t2 oc . the following equation relates t2 to the other vari..
Minimize F in an SOP form, and obtain a possible realization.
Calculate the output torque if the rotational loss at this slip is 400 W.
Ac measurements with constant voltage amplitude reveal that the total core loss of a certain magnetic circuit is 10 W at f = 50 Hz, and 13 W at f = 60 Hz. Find the total core loss if the frequency is increased to 400 Hz.
All other conditions are the same as those specified in Example 5 of this chapter, except that Bi is not given. 8. Present a detailed derivation of Eq. (481 in this chapter, using, as a starting point, any of the other equations that are given.
Calculate the grams of H2O that will form on decomposition of 0.10 mole of ammonium nitrate
Is this a reasonable value from a physiologic point of view? Would the patient be considered normal or diabetic?
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