04 A liquid mixture containing 35.0 mole % benzene (B), 30.0 mole % toluene (T) and the balance xylene (X) is fed to a distillation column. The bottom product contains 98 mole% of X and no B, in which 96% of the X is recovered in this stream. The overhead product from first distillation column is fed to a second column. The overhead product from the second column contains 97% of B in the feed to this column. The composition of the second column overhead stream consists of 94 mole% B and the balance T. It is given that the MW for benzene, toluene and xylene is 78, 92, and 106 respectively. S2 S4 SI Distillation column 1 Distillation column 2 S3 S5 Figure Q3 (a) Sketch a completely labelled process flow diagram for the process. (5 marks) (b) Perform the degree of freedom analysis for all possible boundaries of the process. (6 marks) (c) Compute the molar flow rates and molar composition for all streams by using the feed flowrate shown in Appendix A. (9 marks)