A shell$-$and tube exchanger is being considered as the total condenser of a distillation column. The column produces a highly concentrated ethanol mixture which is to be condensed with cooling water. On which side would you place the ethanol mixture?

Select one:

a$.$ shell side

b$.$ tube side

c$.$ no preference

$10k\frac{g}{s}$ of benzene at $\frac{1}{b}ar$ are to be heated with $2k\frac{g}{s}$ of hot water at $\frac{1}{b}ar.$ On which side would you place the benzene?

Select one:

a$.$ shell side

b$.$ tube side

c$.$ no preference