If an ideal solution is formed by mixing two pure liquids in any proportion, then the ___________________ of mixing is zero?

Related Mcqs:

1. If two pure liquid constituents are mixed in any proportion to give an ideal solution, there is no change in____________________?

   A. Volume
   B. Enthalpy
   C. Both A. & B
   D. Neither A. nor B

2. The chemical potential of any constituent of an ideal solution depends on the ______________ of the solution?

   A. Temperature
   B. Pressure
   C. Composition
   D. All (A), B. and (C)

3. 80 kg of Na2SO4 (molecular weight = 142) is present in 330 kg of an aqueous solution. The solution is cooled such that. 80 kg of Na2SO4 .10H2O crystals separate out. The weight fraction of Na2SO4 in the remaining solution is_________________?

   A. 0.00
   B. 0.18
   C. 0.24
   D. 1.00

4. The activity co-efficient of a solution, which accounts for the departure of liquid phase from ideal solution behaviour________________?

   A. Measures the elevation in boiling point
   B. Is not dependent on the temperature
   C. Is a function of the liquid phase composition
   D. Measures the depression in freezing point

5. 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

6. Those solutions in which there is no volume change upon mixing the components in the liquid state and which, when diluted do not undergo any heat change (i.e. heat of dilution is zero), are called ____________ solutions?

   A. Ideal
   B. Real
   C. Isotonic
   D. None of these

7. Critical solution temperature (or the con-solute temperature) for partially miscible liquids (e.g., phenol-water) is the minimum temperature at which___________________?

   A. A homogeneous solution (say of phenol water) is formed
   B. Mutual solubility of the two liquids shows a decreasing trend
   C. Two liquids are completely separated into two layers
   D. None of these

8. On mixing 56 gm of CaO with 63 gm of HNO3, the amount of Ca(NO3)2 formed is ______________ gm?

   A. 82
   B. 164
   C. 41
   D. 8.2

9. Heat of solution in a system in which both solute and solvent are liquids is termed as_________________?

   A. Heat of solvation
   B. Heat of hydration
   C. Standard integral heat of solution
   D. Heat of mixing

10. Gibbs free energy of a pure fluid approaches _____________ as the pressure tends to zero at constant temperature?

    A. Infinity
    B. Minus infinity
    C. Zero
    D. None of these