The increase in the temperature of the aqueous solution will result in decrease of its________________?

Related Mcqs:

1. Increasing the temperature of an aqueous solution will cause decrease in its________________?

   A. Molality
   B. Mole fraction
   C. Weight percent
   D. Molarity

2. 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

3. 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

4. The weight fraction of methanol in an aqueous solution is 0.64. The mole fraction of methanol XM satisfies________________?

   A. XM < 0.5
   B. XM = 0.5
   C. 0.5 < XM < 0.64
   D. XM ≥ 0.64

5. The evaporation of aqueous solution of sugar causes its molarity to__________________?

   A. Decrease
   B. Increase
   C. Remain unchanged
   D. Either A. or B.; depends on the concentration of the solution

6. An aqueous solution of 2.45% by weight H2SO4 has a specific gravity of 1.011. The composition expressed in normality is______________?

   A. 0.2500
   B. 0.2528
   C. 0.5000
   D. 0.5055

7. At room temperature, the product [H+] [OH-] in a solution is 10-14 moles/litre. If, [OH-] = 10-6 moles/litre, then the pH of the solution will be ________________________?

   A. 6
   B. 8
   C. 10
   D. 12

8. 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

9. 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

10. 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