a. \(200.0 \mathrm{kmol} / \mathrm{h}\) of an aqueous liquid feed saturated with \(\mathrm{n}\)-butanol is fed to a kettle reboiler at \(1.0 \mathrm{~atm}\). Vapor at a flow rate \(\mathrm{V}=\mathrm{D}\) is withdrawn with \(\mathrm{n}\)-butanol distillate mole fraction \(\mathrm{y}_{\text {dist }}=0.15\). Find \(\mathrm{x}_{\text {bot }}\) ( \(\mathrm{n}\)-butanol mole fraction), B, and D.

b. \(150.0 \mathrm{kmol} / \mathrm{h}\) of a \(\mathrm{n}\)-butanol liquid feed saturated with water (point \(\beta\) in Figure \(8-2 \mathrm{~B}\) ) is fed to a kettle reboiler at \(1.0 \mathrm{~atm}\). Bottoms is withdrawn at flow rate \(\mathrm{L}=\mathrm{B}\) at water mole fraction \(\mathrm{x}_{\text {bot }}=0.40\). Find \(\mathrm{y}_{\text {dist }}\) (water mole fraction), \(\mathrm{B}\), and \(\mathrm{D}\).

Figure 8-2b

Equilibrium data are in Table 8-5 in Problem 8.D3 and are plotted in Figure 8-2.

Table 8-5

Problem 8.D3

Transcribed Image Text:

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