You have a feed mixture with $20$ mole $\%$ propane, $35$ mole $\%$ n$-$butane, and $45\%$ n$-$pentane $($propane is most volatile$).$ The feed is a saturated vapor. $F=100kg$ moles $\frac{?}{hr},\frac{L}{D}=2\mathrm{.}0.$ You desire $98\mathrm{.}8\%$ recovery of $n-$ butane in the distillate and $99\mathrm{.}3\%$ recovery of $n-$pentane in the bottoms.

$3\mathrm{.}1.$ Find distillate and bottoms flow rates. Explicitly state any assumptions you make.

$3\mathrm{.}2.$ Draw the calculated total flow rate profiles for $2\mathrm{.}1,$ labeling your curves. Assume CMO.

$3\mathrm{.}3.$ For $2\mathrm{.}1,$ show the approximate concentration profiles for propane, n$-$butane, and n$-$pentane. Label your

curves.