Le Chatelier's Principle

Consider the following exothermic reaction below.

A + B ⇌ C + D

Where would the equilibrium shift if the amount of C is increased?

• The equilibrium will shift to the left.
• The equilibrium will shift to the right.
• The equilibrium will remain unchanged.

Consider the following exothermic reaction below.

A + B ⇌ C + D

Where would the equilibrium shift if the amount of D is decreased?

• The equilibrium will shift to the left.
• The equilibrium will shift to the right.
• The equilibrium will remain unchanged.

Consider the following exothermic reaction below.

A + B ⇌ C + D

Where would the equilibrium shift if E gas is introduced in the system?

• The equilibrium will shift to the left.
• The equilibrium will shift to the right.
• The equilibrium will remain unchanged.

Consider the following exothermic reaction below.

A + B ⇌ C + D

Where would the equilibrium shift if the temperature of the reaction decreases?

• The equilibrium remains unchanged.
• The equilibrium shifts to the right.
• The equilibrium shifts to the left.

Consider the following exothermic reaction below.

A + B ⇌ C + D

How will the equilibrium be affected if a catalyst is added to the reaction?

• The equilibrium will shift to the left.

• The equilibrium will remain unchanged.

• The equilibrium will shift to the right.

Consider the following exothermic reaction below.

A + B ⇌ C + D

What will occur to the equilibrium if the concentration of A is decreased?

• The equilibrium will shift to the left.

• The equilibrium will shift to the right.

• The equilibrium will remain unchanged.

Consider the following exothermic reaction below.

2SO_3(g) ⇌ 2SO_2(g) + O_2(g)

What will occur to the equilibrium if sulfur dioxide is added to the system?

• The equilibrium will shift to the left.

• The equilibrium will shift to the right.

• The equilibrium will remain unchanged.

Consider the following exothermic reaction below.

2SO_3(g) ⇌ 2SO_2(g) + O_2(g)

What will occur to the equilibrium if sulfur trioxide is removed from the system?

• The equilibrium will shift to the left.

• The equilibrium will shift to the right.

• The equilibrium will remain unchanged.

Consider the following exothermic reaction below.

2SO_3(g) ⇌ 2SO_2(g) + O_2(g)

What will occur to the equilibrium if oxygen is added to the system?

• The equilibrium will shift to the left.

• The equilibrium will shift to the right.

• The equilibrium will remain unchanged.

Consider the following exothermic reaction below.

2HgO_(s) ⇌ Hg_(l) + O_2(g)

What will occur to the equilibrium if pressure on the system increases?

• The equilibrium will shift to the left.

• The equilibrium will shift to the right.

• The equilibrium will remain unchanged.