CHM ENG 150A Midterm: cheme150B-fa2014-mt2-Wallman-exam
8 Jan 2019
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By signing my name below, i affirm that i have not received assistance in completing this examination paper nor have i given assistance to another student. Gsi whose section you are officially enrolled in:_____________ A 4 mol% ammonia-gas mixture is contacted with pure water at 1atm and 20oc. The film mass transfer coefficients for the gas and liquid phase are ky and kx, respectively (the mixture is dilute). The ratio kx/ky is 1: (5 points) plot the ammonia-water equilibrium on an x-y diagram (reference table a. 3-22). An oil is to be stream-stripped in a tray column to recover the benzene impurity contaminating the oil. The oil feed to the stripper contains 8 mol% benzene, 75% of which is to be recovered. Graph paper is included below if you wish to employ the graphical method. Graph paper attached for use with the graphical method.
