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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.
Calculate the heat when 100.0 mL of 0.500 M HCl is mixed with 300.0 mL of 0.100 M Ba(OH)2. Assuming that the temperature of both solutions was initially 25.0C and that the final mixture has a mass of 400.0 g and a specific heat capacity of 4.18 J..
a. Develop a general equation that relates the average value of n to the mass of a given mixture of PCBs and the mass of AgCl produced. b. A 0.1947-g sample of a commercial PCB yielded 0.4791 g of AgCl. What is the average value of n for this samp..
Find the total core loss if the frequency is increased to 400 Hz.
If wye-connected capacitors are placed in parallel with the two loads in order to improve the supply power factor, determine the value of capacitance in farads in each phase needed to bring the overall power factor to unity.
How many kg of benzene are condensed by this process per 1000 m3 of the original mixture if the vapor pressure of at 21.1oC is 75 mm Hg?
Develop a mass balance for a continuous diafiltration step and indicate the volumetric flow rates and concentrations of different species in the different streams obtained.
One type of commercial smoke detector contains a minute amount of radioactive americium-241 (241Am), which decays by -particle production.
What is the purpose of a suture? What are some of the important properties that must be considered when selecting a biomaterial for use as a suture? List four biomaterials that are commonly used for sutures.
A string of negligible diameter is drawn down the center-line of a pipe containing a Newtonian fluid. At what velocity, w, must the string be drawn in order to vaporize the fluid?
Explain why the resting potential does not equal the Nernst potential of any of the ions
Find reading of oil-mercury differential manometer.
Two separate metal blocks of thickness d and 2d are kept at constant temperature T0 at the top anda constant heat flux q0 is provided at the bottom. Draw the steady state temperature profile for eachof the blocks.
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