Question

Consider a vapour-liquid mixture of components 𝐴 and 𝐵 that obeys Raoult’s law. The vapour pressure of 𝐴 is half that of 𝐵. The vapour phase concentrations of 𝐴 and 𝐵 are 3 mol m−3 and 6 mol m−3, respectively. At equilibrium, the ratio of the liquid phase concentration of 𝐴 to that of 𝐵 is