A flash drum operating at $60C$ is to separate $)=(F$ of solution of benzene and toluene containing $44\%$ Benzene $)=z=(0\mathrm{.}44$ into vapor $(V)$ and liquid $(L)$ streams. The vapor pressure of both components can be described using the Antoine$-$equation:

$lo{g}_{10}P(mmHg)=A-\frac{B}{T(C)+C}$

with for benzene: $A=7\mathrm{.}4787,B=1701,C=294$

and for toluene: $A=7\mathrm{.}4195,B=1738,C=273\mathrm{.}5$

a$)$ Calculate the saturation pressures of Benzene and Toluene

b$)$ What is the operating pressure of the flash drum?

c$)$ Calculate the distribution coefficients and relative volatility

d$)$ Build xy diagram at the temperature of the drum?

e$)$ What is the q value and slope of operating line?

f$)$ Draw the operating line and find the intersection of operating and equilibrium lines

g$)$ What is the purity of the top and the bottom stream?