An equimolar mix of benzene `&` toluene is prepared the total V.P. of this mix as a fraction of mole fraction of benzene is found to be `P_(T)=200+400X_(ben)`.
(a) Calculate composition of vapours of this mix. [Assume that the no. of moles going into vapour phase is negligible in comparsion to no. of moles present in liq. phase].
(b) If the vapour above liq in part `A` are collected `&` are condensed into a new liquid calculate composition of vapours of this new liq.

Explanation

To solve the given problem, we will break it down into two parts as specified in the question.

### Part (a): Calculate the composition of vapours of the mixture

1. **Understanding the Given Information**:
- We have an equimolar mixture of benzene (A) and toluene (B).
- The total vapor pressure \( P_T \) is given by the equation:
\[
...