The diagram below shows the liquid-vapor balance between two components A and B at 1 atm. The molar fraction in the liquid solution is x and in the vapor it is y. The boiling point of A is 124 °C and that of B is 155 °C. In such a way: A. What is the composition of the vapor in equilibrium with the solution when the composition of the liquid phase is i) Xa = 0.5; ii) Xb = 0.33? B. When Za = 0.8 what will be the molar ratio between coexisting phases for a temperature close to 130 °C

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