please do this question!!

Consider a feed containing 70mol% of A and 30mol% of B. The relative volatility of A to B is 4 . For a batch distillation with no reflux 1. What is the concentration of A in the first drop of distillate being collected. 2. What is the amount of distillate collected with an average concentration of 90mol% of A. For a batch distillation with 5 equilibrium stages 3 . What is maximum the amount of distillate collected with a fixed concentration of 90mol% of A. Numerical trial and error is requited to solve this problem. Please prepare a computer program, EXCEL spreadsheet or be familiar with online McCabe-Thiele calculator below for solving the problem. https://checalc.com/calc/binary.html https://tlk-energy.de/en/phase-diagrams/mccabe-thiele