A solution which resists change in its pH value on addition of acid/alkali is called the ____________________ solution?

Related Mcqs:

1. If pH value of a solution is 8, then its pOH value will be ____________________?

   A. 6
   B. 1
   C. 7
   D. 10

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. Acidity or alkanity of a solution is expressed by its pH value, which is defined as (where, [H+] = hydrogen ion concentration in the solution) ?

   A. log (1/H+)
   B. – log (1/H+)
   C. 1/log H+
   D. None of these

4. The pH value of a solution is 5.9. If the hydrogen ion concentration is decreased hundred times, the solution will be______________?

   A. Basic
   B. More acidic
   C. Neutral
   D. Of the same acidity

5. pH value of a solution containing 1 gm of hydrogen ion per litre will be ____________________?

   A. 0
   B. 1
   C. 7
   D. 10

6. Enthalpy change resulting, when unit mass of solid is wetted with sufficient liquid, so that further addition of liquid produces no additional thermal effect, is called the heat of________________?

   A. Mixing
   B. Adsorption
   C. Wetting
   D. Complete wetting

7. In case of the decomposition of hydroiodic acid (2HI ⇌ H2 + I2), addition of H2 (at equilibrium condition) will__________________?

   A. Increase the partial pressure of I2
   B. Decrease the partial pressure of HI
   C. Diminish the degree of dissociation of HI
   D. None of these

8. 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)

9. 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

10. 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