Question 1: A 100kmol/h stream that is 97 mole\% carbon tetrachloride (CCl4) and 3% carbon disulfide (CS2) is to be recovered from the bottom of a distillation column. The feed to the column is 16 mole\% CS2 and 84%CCl4, and 2% of the CCl4 entering the column is contained in the overhead stream leaving the top of the column. [15] (a) Draw and label a flowchart of the process and do the degree-of-freedom analysis. [5] (b) Calculate the mass and mole fraction of CCl4 in the overhead stream and determine the molar flow rates of CCl4 and CS2 in the overhead and feed streams. [10]