The vapor$-$liquid equilibrium diagram of the n$-$heptane and ethylbenzene binary system at $101\mathrm{.}32$kPa pressure is given in Figure Q$1$ below. A feed stream containing $50$kgmol percent $n-$heptane, will be supplied to a flash separator, at a flow rate of $72$kgmo$\frac{l}{h}.$ Please use marks and labels on the chart and plot as needed.

a$.$ Which substance is more volatile?

Find:

b$.$ The concentration of $n-$heptane at the bubble point.

c$.$ The concentration of ethylbenzene at the dew point. When half of the feed is vaporized:

d$.$ The temperature of the flash chamber

e$.$ The recovery of $n-$heptane in the vapor product.

Figure Q$1.$ Vapor$-$liquid equilibrium charts of $n-$heptane and ethyl benzene at $101\mathrm{.}32$kPa.