State and explain Raoult's law. Show graphically the variation of total V.P. over a mixture of two volatile liquids with the composition of the mixture.

State Raoult's law for a solution of volatile liquids.

(a) The mass of a nucleus in its ground state is always less than total mass of its constituents - neutrons and protons. Explain. (b) Plot a graph showing the variation of potential energy of a pair of nucleons as a function of their separation.

The vapour pressure of pure liquid (A) at is 575 torr and that of pure liquid B s 390 torr. These two compounds form ideal liquid and gaseous mixtures. Considers the equilibrium composition of a mixture in which the mole fraction of (A) in the vapour is 0.350 . Calculate the total pressure of the vapour and the compsoition of the liquid mixture.

The total pressure of a mixture of oxygen and hydrogen is 1.0 atm. The mixture is ignited and the water is removed. The remaining gas is pure hydrogen and exerts a pressure of 0.40 atm when measured at the same values of T and V as the original mixture. What was the composition of the original mixture in mole fraction ?

A mixture of two volatile liquids having little difference in their boiling points can be purified by

The vapour pressure of pure liquids A and B is 450 and 700mm Hg , respectively, at 350K. Find out the composition of the liquid mixture if the total vapour pressure is 600mm Hg . Also find the composition of the vapour phase.

A maxima or minima is obtained in the temperature composition curve of a mixture of two liquids indicates

Compreshension-II In non-ideal solutions, at one of the intermediate compostions, the total vapour pressure is highest and the boiling point is lowest. At this point, the composition of the liquid and vapour phase is same. So, if liquid mixture vapouriese at this point and vapours are condensed, teh condensate contains same compositon as present in original liquid mixture. it means at this point liquid behaves like a pure liquid and is called an Azeotropic mixture. Choose the correct answer :

Compreshension-II In non-ideal solutions, at one of the intermediate compostions, the total vapour pressure is highest and the boiling point is lowest. At this point, the composition of the liquid and vapour phase is same. So, if liquid mixture vapouriese at this point and vapours are condensed, teh condensate contains same compositon as present in original liquid mixture. it means at this point liquid behaves like a pure liquid and is called an Azeotropic mixture. Which of the following cannot form low boiling point azeotrope ?