1. We wish to separate benzene from toluene in a distillation column with a total condenser and a partial reboiler. First feed flowrate is 100kmole/hr, which is 50% benzene and is saturated vapour. Second feed flowrate is 200kmole/hr, which is 40% toluene. Second Feed is saturated liquid. We desire a bottom product that is 95% toluene and a distillate product that is 90% benzene. The reflux is saturated liquid. Column is well insulated. Find the reflux ratio if QR is 1.40107kJ/hr. Hints: Use data given in the enthalpy-composition diagram provided