Design the theoretical plate number and reflux, $1\mathrm{.}3$ Rmin, of a column to separate $15\%$ propane, $15\%$ butane, $30\%$ pentane, and $40\%$ hexane. At $366\mathrm{.}5$ K and $689\mathrm{.}5$ kPa.

You want $90\%$ propane at the top, at $750$ K$.$ And all the hexane at the bottom, at $320$K$.$

The pressures will be the average of the bubble and dew pressures.

Assume an input of $1,000$ kmol$/$h