Q$2)$In the Stripping section of the Fractionation distillation column, a liquid mixture of benzenetoluene is to be distilled in a flash distillation tower at $101\mathrm{.}3$kPa pressure. The feed of $100kgmo\frac{l}{h}$ is liquid and it contains $45$mol$\%$ benzene and $55$mol$\%$ toluene and enters at $54C.$ A distillate containing $95$mol$\%$ benzene and $5$mol$\%$ toluene. The reflux ratio is $4$:$1.$ The average heat capacity of the feed is $140k\frac{J}{k}$gmol.$K$ and the average latent heat $20000k\frac{J}{k}g$ mol. The slope of the q$-$line equation $8\mathrm{.}3.$The equilibrium data for this system is given in this Figure. The bottoms containing $10$mol$\%$ benzene and $58$kgmo$\frac{l}{h}$ is liquid. Calculate the amount of the liquid before the boiler and the returned vapor to the distillation column from the boiler. Calculate the number of theoretical trays in Stripping section. Calculate the value of $q?.$

$=100k\frac{g}{h}$

$iF=58\%$mol

$83$

$q$

$83$