Answer and explain each one please 1 What assumption must be

Answer and explain each one please?

1. What assumption must be true in order to have constant molal overflow (CMO)?

2. Is the condenser a stage in a distillation column?
a. Yes.
b. No.
c. It depends on the type of condenser.
d. Only if the feed is on the top tray.
e. Only if the feed is on the bottom tray.

Solution

1 ) The conditions under which these assumptions hold true are as
follows:

The column (except the reboiler and condenser) is
adiabatic
Enthalpic contributions due to temperature changes are
negligible relative to those due to phase change
The heat of vaporization per mole is not concentration
dependent (i.e., the two components have similar heats of
vaporization)

2)   c. It depends on the type of condenser.