A mixture of two miscible volatile ideal liquids P and Q (obeying Raoult’s law) is keptin a vessel (molar ratio of P and Q in the mixture is m). At a suitable temperature T,the vapour above the liquid is condensed in another vessel. The liquid obtained on con-densation is allowed to evaporate and establish equilibrium with its vapour. The vapouris then condensed in another vessel. The process of such evaporation and condensationis repeated for n times. If the ratio of the vapour pressure of pure P to that of pure Q isp, the molar ratio of P and Q in the condensed liquid obtained after nth cycle (for finiten > 1) is

priyanka meena , 6 Years ago

Grade 12