I need help with questions V, VI and VII ONLY. Please provide detailed explanation. Thanks

5) Analysis of a binary, multi-stage distillation column results in the following equations for the operating lines: Rectification operating line: y = 0.64x4 + 0.29 Stripping operating line: Yi-1 = 1.9x; -0.015 = The component molar flowrate of the more volatile component in the bottom product stream is 0.7 mol s1 and the feed molar flowrate is 60 mol s-1. Determine the following: i) ii) iii) iv) v) The reflux ratio. The mole fraction of the more volatile component in the distillate. The molar flowrates of liquid and vapour in the stripping section of the column. The mole fraction of the more volatile component in the feed. The molar flowrates of liquid and vapour in the rectification section of the column. The coordinates of the intersection of the operating lines. The 'quality of the feed. vi) vii)