Equilibrium and Le Chatelier's Principle

N₂(g) + 3H₂(g) ↔ 2 NH₃(g) + heat

Adding H₂ will cause the equilibrium to:

• Shift right

• Shift left

• Have no change

• Speed up

What two factors indicate that a reaction is at equilibrium?

• Concentrations are equal; the forward and reverse reactions are equal

• The concentrations are constant; the forward and reverse reactions are equal

• The concentrations are equal; the forward reaction is faster than the reverse reaction

• The concentrations are constant; the forward reaction is faster than the reverse reaction

N₂(g) + 3H₂(g) ↔ 2 NH₃(g) + heat

Increasing the pressure will cause the equilibrium to:

• Shift right

• Shift left

• Have no change

• Speed up

Which of the following statements is not correct regarding equilibrium?

• Equilibrium is achieved when the product and reactant concentrations are the same

• Equilibrium is achieved when the concentrations of all reactants is constant

• Equilibrium is achieved when the forward and reverse reactions are equal

• Equilibrium is achieved when the ratio of products to reactants is constant

N₂(g) + 3H₂(g) ↔ 2 NH₃(g) + heat

Increasing the temperature will cause the equilibrium to:

• Shift right

• Shift left

• Have no change

• Speed up

If a reversible reaction has reached equilibrium, which of the following is true about the concentration of the reactants vs the products?

• Some reactants are present, as are some prooducts

• Only reactant is present, there are no products

• Only product is present, there are no reactants

A double sided arrow (↔), indicates that a reaction is:

• Reversible

• Irreversible

• Not reactive

N₂(g) + 3H₂(g) ↔ 2 NH₃(g) + heat

Removing N₂ will cause the equilibrium to:

• Shift right

• Shift left

• Have no change

• Speed up

A single sided arrow (→), indicates that a reaction is:

• Reversible

• Irreversible

• Not reactive

N₂(g) + 3H₂(g) ↔ 2 NH₃(g) + heat

Increasing the volume of the container will cause the equilibrium to:

• Shift right

• Shift left

• Have no change

• Speed up