the unit below treats a mixture of tetrachloromethane ( CCl ) and chlorobenzene ( C6H5Cl) by flash distillation

step by step with diagram to UNDERSTAND please repeat step by step please

4.(13) The unit below treats a mixture of tetrachloromethane (CCl4) and chlorobenzene (C6H5Cl) by flash distillation. Use the CCl4C6H5Cl phase diagram below to determine the compositions ( mol fractions CCl4 and C6H5Cl) and flow rates (mol/min) of streams 3 and 4 . Also, label on the CCl4C6H5Cl phase diagram the phases corresponding to each region and indicate the coordinates of (1) the stream before the expansion valve, (2) the vapor stream, and (3) the liquid stream. Pressure-composition phase diagram for CCl4+C6H5Cl mixtures at 40C