CHEMICAL EQUILIBRIUM

1. When a mixture of and is sealed in a flask and temperature is kept at 25°C, following equilibrium is established.

H2(g) +12(g) 2HI (9))

 
 
 
 

2. Which is true about the equilibrium state?

 
 
 
 

3. The equilibrium constant (K) has which of the following units for the reaction ?

 
 
 
 

4. Concentration of reactants and products at equilibrium remains unchanged if

 
 
 
 

5. Which of the following does not happen, when a system is at equilibrium state?

 
 
 
 

6. In an irreversible reaction equilibrium is

 
 
 
 

7. At equilibrium, which of the following remains constant?

 
 
 
 

Question 1 of 7

 

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  1. Define chemical equilibrium with example
  2. What is meant by chemical equilibrium?
  3. Chemical Equilibrium
  4. Differentiate between reversible and irreversible reactions?
  5. State Le-Chatelier’s principle.
  6. What is the significance of the equilibrium constant (Kc)?
  7. Why does a catalyst not affect the position of equilibrium?
  8. What happens to the equilibrium position if the concentration of a reactant is increased?
  9. What is the effect of decreasing pressure on a gaseous equilibrium system?
  10. What is dynamic equilibrium?
  11. How does temperature affect the equilibrium constant?
  12. State law of mass action?
  13. State the ways that equilibrium can be recognized.
  14. Describe the macroscopic characteristics of an equilibrium reaction.
  15. What are the applications of Le Chatelier’s principle in industrial processes?
  16. How does a catalyst affect a chemical equilibrium?
  17. Differentiate between reversible and irreversible reaction?
  18. Why NH₃ acts as a Bronsted-Lowry base?
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