See image — AITS & Test Series Chemistry Question

💡 Solution & Explanation

The mole fraction of A in distillate, º ' A A A A total 1 100 X .P 5 4 X Y 1 3 P 17 100 80 4 4         Now, V.P. of distillate, ' º ' º A A B B P X .P X .P   5 12 100 80