P$6.$ A mixture containing $50\%$ mole of Benzene and $50\%$ mole of Toluene is distilled by flash distillation in a separator at $1$ atm pressure. Answer the following questions as a function of $f($the vapor fraction$)$ in the separator,

a$)$ Temperatute of the flash distillation unit

b$)$ Composition of the liquid leaving the separator

c$)$ Composition of the vapor taken from the top of the separator

Benzene$-$toluene system equilibrium data:

$\backslash$table$[[$Temperature$,C,85,90,95,100,105,110$