Chemical Equilibrium

The equilibrium constant (Kc) is:

 

 
 
 
 

A reverse reaction is one that:

 
 
 
 

Which is true about the equilibrium state?

 
 
 
 

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

 
 
 
 

A reversible reaction have the following characteristics except:

 

 
 
 
 

At dynamic equilibrium:

 

 
 
 
 

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

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


Which substance or substances will be present in the equilibrium mixture?

 

 
 
 
 

In the lime kiln, the reaction: CaCO3(s)→→→→CaO (s) + CO2(g)
goes to completion because

 
 
 
 

Which one of the following statement is not correct about active
mass?

 
 
 
 

The equilibrium constant (Kc) expression for the reaction is,
N2(g) + O2(g) 2NO(g)

 
 
 
 

Concentration of reactants and products at equilibrium remains
unchanged if

 
 
 
 

Active mass means:

 
 
 
 

Kc=Kf/Kr  is known as

 
 
 
 

When the magnitude of Kc is very large it indicates:

 
 
 
 

Which of the following reaction will not have any units for Kc?

 
 
 
 

The characteristics of reversible reactions are many, except
following one:

 
 
 
 

In an irreversible reaction dynamic equilibrium:

 
 
 
 

Reactions which have comparable amounts of reactants and
products at equilibrium state have:

 
 
 
 

When the value of Kc, is very large it shows that

 
 
 
 

What are the units for
N2 (g) + O2(g) ⇔ 2NO2 (g)

 
 
 
 

The characteristics of reversible reactions are many, except
following one:

 
 
 
 

When the magnitude of Kc is very small it indicates:

 
 
 
 

When a system is at equilibrium-states:

 
 
 
 

Active mass means

 
 
 
 

In an irreversible reaction equilibrium is

 
 
 
 

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

 
 
 
 

Concentration of reactants and products at equilibrium remains unchanged if

 
 
 
 

Which is true about the equilibrium state?

 
 
 
 

When value of Kc, is very small it shows that:

 
 
 
 

Both forward and reverse reactions continue at the same rate.
When a mixture of H2 and I2 is sealed in a flask and temperature is
kept at 25°C, following equilibrium is established.
H₂ + I2 (9) ⇔ 2HI (9)
Which substance or substances will be present in the equilibrium
mixture?

 
 
 
 

In an irreversible reaction equilibrium is

 
 
 
 

At dynamic equilibrium:

 
 
 
 

Concentration of reactants and products at equilibrium remains unchanged if

 
 
 
 

Question 1 of 33

Related Questions:

  1. CHEMICAL EQUILIBRIUM
  2. Define chemical equilibrium with example
  3. What is meant by 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?
  19. ACIDS, BASES AND SALTS
  20. ENVIRONMENTAL CHEMISTRY-AIR