mass transfer

1000kg/hr of a mixture containing 42 mole percent heptane (Mw=100) and 58 mole percent ethyl benzene (Mw=106) is to be fractionated to a distillate containing 97 mole percent heptane and a residue containing 99 mole percent ethyl benzene using a total condenser and feed at its saturated liquid condition. The enthalpy-concentration data for the heptane-ethyl benzene at 1atm pressure are as follows: Using the Ponchon Savarit method calculate the following: a. Minimum reflux ratio. b. Minimum number of stages (Nmin) at total reflux. c. Number of stages at reflux ratio of 2.5 d. Condenser duty (QC ) in kJ/hr. e. Reboiler duty (QR) in kJ/hr