We are required to reduce the DMF content of a feedstream containing 55 mol% DMF, the balance is nitrogen. A separator is designed such that exactly two-thirds of the Dimethyl Formamide (DMF) fed to it will be obtained in pure form in one of the exit streams. (a) (20 points) Draw a PFD for the above and perform a degree of freedom analysis. Comment on whether all unknown variables in the PFD (flow rates and compositions) can be found. (b) (8 points) Solve for the exit stream composition. (c) (2 points) Did you choose a basis?