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 composi- tions) can be found. (b) (8 points) Solve for the exit stream composition. (c) (2 points) Did you choose a basis?