We are distilling a mixture that is \(10.0 \mathrm{~mol} \%\) methanol, \(20.0 \mathrm{~mol} \%\) ethanol, \(30.0 \mathrm{~mol} \% \mathrm{n}\)-propanol, and \(40.0 \mathrm{~mol} \% \mathrm{n}\)-butanol. Methanol is most volatile and n-butanol is least volatile. The feed is a saturated liquid. We desire to recover \(98.0 \%\) of the ethanol in the distillate and \(97.0 \%\) of the n-propanol in the bottoms. The column has a total condenser and a partial reboiler. The feed rate is \(100.0 \mathrm{kmol} / \mathrm{h}\). Pressure is \(1.0 \mathrm{~atm} . \mathrm{L} / \mathrm{D}=3.0\).

1. The column is hottest at:

a. The condenser.

b. The feed plate.

c. The reboiler.

2. In the rectifying (enriching) section:

a. Liquid flow rate \(>\) vapor flow rate.

b. Liquid flow rate \(=\) vapor flow rate.

c. Liquid flow rate \(<\) vapor flow rate.

3. Comparing the stripping section to the rectifying section:

a. Liquid flow rate in stripping section \(>\) liquid flow rate in rectifying section.

b. Liquid flow rate in stripping section \(=\) liquid flow rate in rectifying section.

c. Liquid flow rate in stripping section \(<\) liquid flow rate in rectifying section.

4. The HK is:

a. Methanol.

b. Ethanol.

c. n-propanol.

d. n-butanol.
5. If you were going to do external mass balances around the column to find \(\mathrm{B}\) and \(\mathrm{D}\), the best assumption to make is:

a. All of the methanol and n-propanol are in distillate.

b. All of the methanol is in distillate, and all of the n-butanol is in bottoms.

c. All of the ethanol is in distillate, and all of the n-propanol is in bottoms.

d. All of the n-propanol and n-butanol are in bottoms.