VAPOUR PRESSURE

Assertion:Lowering of vapour pressure is not dependent on the number of species present in the solution. Reason : Lowering of vapour pressure and relative lowering of vapour pressure are colligative properties

Mole fraction of component A in vapour phase is chi_(1) and that of component A in liquid mixture is chi_2 , then ( p_(A)^@ )= vapour pressure of pure A, p_(B)^@ = vapour pressure of pure B), the total vapour pressure of liquid mixture is

At a certain temperature, the vapour pressure of water is 90 mm. At the same temperature the vapour pressure of a solution containing a non - volatile solute is 81 mm. The relative lowering of vapour pressure is

At 300 K, the vapour pressure of an ideal solution containing 1 mole of A and 3 moles of B is 500 mm Hg. At the same temperature, 2 moles of B are added to this solution. The vapour pressure of solution increases by 10% of the original vapour pressure. Correct statements about the vapour pressure are

The vapour pressure of water at 293 K is 17.51 mm . The lowering of vapour pressure of sugar is 0.0614 mm . Calculate: a. The relative lowering of vapour pressure b.The vapour pressure of the solution c. The mole fraction of water