In case of a ternary system involving two liquid components and a solute, the ratio of the concentration of the solute in the two phases at equilibrium is called the distribution co-efficient. The distribution co-efficient depends upon the______________?

Related Mcqs:

1. A liquid is in equilibrium with its vapor at its boiling point. On an average, the molecules in the liquid and gaseous phases have equal______________?

   A. Kinetic energy
   B. Intermolecular forces of attraction
   C. Potential energy
   D. Total energy

2. “The equilibrium value of the mole fraction of the gas dissolved in a liquid is directly proportional to the partial pressure of that gas above the liquid surface”. This statement pertaining to the solubility of gases in liquid is the ______________ law?

   A. Raoult’s
   B. Henry’s
   C. Amagat’s
   D. None of these

3. The vapor pressure of the solvent decreased by 10 mm Hg, when a non-volatile solute was added to the solvent. The mole fraction of the solute in the solution is 0.2. What should be the mole fraction of the solvent, if the decrease in vapor pressure of the solvent is required to be 20 mm Hg ?

   A. 0.2
   B. 0.1
   C. 0.4
   D. 0.6

4. A very dilute solution is prepared by dissolving ‘x1’ mole of solute in ‘x2’ mole of a solvent. The mole fraction of solute is approximately equal to_________________?

   A. x1/x2
   B. x2/x1
   C. 1 – (x1/x2)
   D. 1/x2

5. The molecules of a liquid which is in equilibrium with its vapor at its boiling point on an average have equal _____________ in the two phases?

   A. Potential energy
   B. Intermolecular forces
   C. Kinetic energy
   D. Total energy

6. In general, the specific heats of aqueous solutions _____________ with increase in the concentration of the solute?

   A. Increase
   B. Decrease
   C. Remain unchanged
   D. None of these

7. With increase in the solute concentration, the specific heat of aqueous solutions _____________________?

   A. Increases
   B. Decreases
   C. Remains unchanged
   D. Either A. or B.; depends on the type of solution

8. Na2SO4. 10H2O crystals are formed by cooling 100 Kg of 30% by weight aqueous solution of Na2SO4. The final concentration of the solute in the solution is 10%. The weight of crystals is________________?

   A. 20
   B. 32.2
   C. 45.35
   D. 58.65

9. In case of a solution (not of a solid in a liquid), whose total volume is less than the sum of the volumes of its components in their pure states, solubility is__________________?

   A. Independent of temperature
   B. Increases with rise in pressure
   C. Increased with decrease in pressure
   D. Unchanged with pressure changes

10. In case of a solution (not of a solid in a liquid), whose total volume is more than the sum of volumes of its components in their pure states, solubility is__________________?

    A. Independent of the temperature
    B. Increased with the increase in pressure
    C. Decreased with the increase in pressure
    D. Unchanged by the pressure change