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Liquids A and B form ideal solution over the entire range of composition. At temperature T, equimolar binary solution of liquids A and B has vapour pressure 45 torr. At the same temperature, a new solution of A and B having mole fractions xA and xB, respectively, has vapour pressure of 22.5 torr. The value of xAxB in the new solution is .(Given that the vapour pressure of pure liquid A is 20 Torr at temperature T)

Answer» Liquids A and B form ideal solution over the entire range of composition. At temperature T, equimolar binary solution of liquids A and B has vapour pressure 45 torr. At the same temperature, a new solution of A and B having mole fractions xA and xB, respectively, has vapour pressure of 22.5 torr. The value of xAxB in the new solution is .

(Given that the vapour pressure of pure liquid A is 20 Torr at temperature T)


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