For which system does the equilibrium constant Kc has unit of (concentration)-1__________________?

Related Mcqs:

1. Which of the following will not change the concentration of ammonia at the equilibrium ?

   A. Increase of pressure
   B. Increase of volume
   C. Addition of catalyst
   D. Decrease of temperature

2. When sparingly soluble salt is in equilibrium with molar concentration of its oppositely charged ion when the product is called_________________?

   A. common ion effect
   B. solubility product
   C. dissociation constant
   D. dissociation constant for an acid

3. Concentration of solute molecule when they are in equilibrium with solid substance at particular temperature is called________________?

   A. saturated solution
   B. solubility
   C. unsaturated solution
   D. super saturated solution

4. For a given process the heat changes at constant pressure (qp) and at constant volume (qv) are related to each other as___________________?

   A. qp = qv
   B. qp < qv
   C. qp > qv
   D. qp = qv / 2

5. Which of the following points are important in connection with equilibrium constant ?

   A. Kc is constant at given temperature
   B. Kc is unaffected by change in concentration of reactants or products
   C. Kc indicates the extent of reaction but not about the rate of reaction.
   D. All of the above

6. For a reaction involving only gases at 25?C the equilibrium constant can be expressed in terms of molarity Ke or partial pressure Kp. Which is true about the numerical value of Kp ?

   A. Kc is generally greaer than Kp
   B. Kc is generally less than Kp
   C. Kc is generally equal to Kp
   D. Kc is equal to Kp if the total moles of reactants and products are equal

7. Which of the following unit of concentration is independent of temperature ?

   A. Molarity
   B. Molality
   C. Mole fraction
   D. all

8. 10ml of alcohol dissolve in 90ml of water unit of concentration used is________________?

   A. % w/w
   B. % w/v
   C. % v/v
   D. % v/w

9. Which is the unit of (K) rate constant for zero order reaction ?

   A. s-1
   B. mol dm-3 s-1
   C. mol-1 dm3 s-1
   D. mol-2 dm6 s-1

10. The unit of the rate constant (k) is same as that of rate of reaction________________?

    A. First order reaction
    B. Second order reaction
    C. Zero order reaction
    D. Third order reaction