2. A mixture of 100 kmol which contains 60 mol% n-pentane (A) and 40 mol% n- heptane (B) is vaporized at 101.32 kPa pressure in an equilibrium or flash distillation and 40 kmol are distilled, what is the composition of the vapour distilled and of the liquid left? The equilibrium diagram for this system is given at the back of the tutorial. Equilibrium Diagram for Question 2: n-Pentane-Heptane System 1 0.9 0.8 0.7 0.6 Mole fraction of n-pentane in vapor 0.5 0.4 0.3 0.2 0.1 0 0 0.2 0.4 0.6 0.8 1 Mole fraction of n-pentane in liquid Equilibrium Diagram for Question 2: n-Pentane-Heptane System 1 0.9 0.8 0.7 0.6 Mole fraction of n-pentane in vapor 0.5 0.4 0.3 0.2 0.1 0 0 0.2 0.4 0.6 0.8 1 Mole fraction of n-pentane in liquid