[" Select the mixture in which volume of solution is less "],[" than "2vml" on mixing "vml" each of the miscible liquids "]

Select the mixture in which volume of solution is less than 2 V mL on mixing V mL each of the two miscible liquids:

Answer all the questions each question carries one mark. How does the volume change on mixing two volatile liquids to form an ideal solutions?

1. Give reasons for the following: when '30 ml' of ethanol and '30 ml' of water are mixed, the volume of resulting 'solution. is more than '60 ml'. Ans: In ethanol and water, the molecules are by. drogen bonded. When these are mixed 't 0' form a solution, each liquid tends to break the hydrogen bonds of the other liquid. The attractive forces decrease. The total volume of the solution becomes more than '60 m'

How will you separate a mixture containing kerosene and petrol (difference in their boiling point is less than 25 K) which are miscible with each other ? Explain.

When 50mL of ethanol and 50mL of water are mixed, predict whether the volume of the solution is equal to, greater than or less than 100 mL.

n' different liquids, which do not react chemically, are mixed to from a homogeneous mixture. If the densities of the liquids are p_(1),p_(2), . . . . . . . . . . . . P_(n) , respectively, then the density of the homogeneous mixture when (a) the masses of the liquids forming the mixture are equal (b) the volumes of the liquids forming the mixture are equal

Which pair of solutions forms a buffer solution when equal volumes of each are mixed ?

The vapour pressures of pure liquids A and B are 400 and 600 mmHg , respectively at 298K . On mixing the two liquids, the sum of their initial volumes is equal to the volume of the final mixture. The mole fraction of liquid B is 0.5 in the mixture. The vapour pressure of the final solution, the mole fractions of components A and B in vapour phase, respectively are: