3. Comparison of Differential and Flash Distillation. A mixture of 100 kg mol which contains 60 mol% n-pentane (A) and 40 mol% n-heptane (B) is vaporized at 101.32 kPapressure under differential conditions until 40 kg mol are distilled. Use equilibrium data from Problem 1. a. What is the average composition of the total vapor distilled and the composition of the liquid remaining? b. If the same vaporization is done in an equilibrium or flash distillation and 40 kg mol are distilled, what is the composition of the vapor distilled and the composition of the liquid remaining?