a. \(200.0 \mathrm{kmol} / \mathrm{h}\) of a liquid feed that is \(10.0 \mathrm{~mol} \%\) isopropyl alcohol and 90.0 \(\mathrm{mol} \%\) water is stripped in a column with five equilibrium stages. Stripping gas is pure nitrogen. Column pressure can be varied between 1.0 and \(5.0 \mathrm{~atm}\) (make feed gas and feed liquid pressures equal to column pressure). Feed gas can be between \(25.0^{\circ} \mathrm{C}\) and \(100.0^{\circ} \mathrm{C}\), and inlet liquid can be between \(25.0^{\circ} \mathrm{C}\) and \(75.0^{\circ} \mathrm{C}\). Design operating conditions (column pressure, inlet gas flow rate and temperature, and inlet liquid temperature) to recover \(98.0 \%\) of isopropyl alcohol (recover means in gas phase), and we want as high an isopropyl alcohol concentration in outlet gas as possible. Report column pressure, feed gas flow rate and temperature, liquid feed temperature, recovery of the isopropyl alcohol, mole fractions and flow rates of leaving gas and liquid product streams, and temperature on every stage.

b. Determine the diameter of the column if it has sieve plates, uses a plate spacing of \(0.60960 \mathrm{~m}\), has an \(85.0 \%\) flooding factor, and uses the Fair flooding calculation method. For the other values, use the default values in Aspen Plus.