A liquid feed at its bubble point is to be distilled in a tray tower to produce the distillate and residue as follows. F

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A liquid feed at its bubble point is to be distilled in a tray
tower to produce the distillate and residue as follows. Food, x1 =
0.047, x2 = 0.072, x3 = 0.881; the distillate, x1D = 0.126, x2D =
0.1913, x3D = 0.6827; remainder, x1B = 0, x2B = 0.001, x3B = 0.999.
The average values ​​of alpha to use are alpha1 = 4.19, alpha2 =
1.58, alpha3 = 1. Determine the distillate and residue flow rate
for a 100 mol/h feed, the minimum number of stages, and the
composition of 1 in the residue. Calculate the minimum reflux ratio
and the number of stages at 1.25 times the minimum reflux
ratio.