Liquid A and B form an ideal solution. The vapour pressures of pure liquids A and B are 350 and 750 mm Hg respectively at the same temperature. If…

Liquid A and B form an ideal solution. The vapour pressures of pure liquids A and B are $\displaystyle 350$ and $\displaystyle 750$ mm Hg respectively at the same temperature. If $\displaystyle x_{\mathrm{A}}$ and $\displaystyle x_{\mathrm{B}}$ are the mole fraction of A and B in solution while $\displaystyle y_A$ and $\displaystyle y_B$ are the mole fraction of A and B in vapour phase then,