For example, you should implement the first three videos before implementing this one. You may wish to choose your own order for viewing them. Note: This is a companion file in a series. If the MAB model indicates a possible problem, it's time to go to the library or the lab and validate your model with experimental data. This example shows how to predict activity coefficients in Excel using the Margules Acid-Base (MAB) model.(8min, ) Sometimes you just need a quick estimate of whether to suspect an azeotrope or LLE or some other anomalous behavior. What value of A12 did you find? (Hint: A12 is not the same as A12*RT.) Develop a Pxy diagram for the acetone+acetic acid system like Figure 10.9a, guessing values of A12 until you match the pressure at x 1=0.5 (305mmHg). What value of A12 did you find? (Hint: A12 is not the same as A12*RT.)ģ. Develop a Pxy diagram for the acetone+chloroform system like Figure 10.9c, guessing values of A12 until you match the minimum pressure (azeotrope). What value of A12 did you find? (Hint: A12 is not the same as A12*RT.)Ģ. Develop a Pxy diagram for the IPA+water system like Figure 10.8c, guessing values of A12 until you match the maximum pressure (azeotrope). Some students may find it helpful to refer to this compact list when they find themselves "not being able to find the forest because of all the trees."Ĭomprehension Questions: Assume the SCVP model (Eq. The links on the software tutorial present a summary of the techniques to be implemented throughout Unit3 in a quick access format that is more compact than what is presented elsewhere. If you see a phase diagram like the ones in section 11.8, you might want to learn about LLE phase diagrams. Also, you might like to see how to quickly visualize the Txy analog of the Pxy phase diagram. If you don't get the same results as for the binary equimolar system, check your calculations.Note: This is a companion file in a series. type it as if it was another component), 0.25 of benzene and 0.25 of benzene. For example, instead of an equimolar binary mixture, input a quaternary mixture with 0.25 moles of methanol, 0.25 methanol (ie. You can check your answers by putting in the same component twice. If you are having trouble, the video for the multicomponent SSCED model illustrates a very similar procedure. You should be able to adapt this procedure along with the procedure for the multicomponent ideal solutions to create a multicomponent M1 model. This example shows how to incorporate activity calculations into Excel for solutions that follow the Margules 1-parameter (M1) model.(9min, )
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