Le Chatelier and Equilibrium

2SO_2(g)+O_2(g) ⇌ 2SO_3(g) + Heat

Adding SO_2(g) will

• shift equilibrium right

• shift equilibrium left

• increase rate of reaction

• have no change

Tags

NGSS.HS-PS1-5

2SO_2(g) + O_2(g) ⇌ 2SO_3(g) + Heat

Removing O_2(g) will

• shift equilibrium right

• shift equilibrium left

• increase pressure

• have no change

What happens to the equilibrium if we add methane (CH₄)?

• It shifts left, towards the reactants

• It shifts right, towards the products

• It does not shift

Tags

NGSS.HS-PS1-5

What happens to the equilibrium if we remove water (H₂O)?

• It shifts left, towards the reactants

• It shifts right, towards the products

• It does not shift

Tags

NGSS.HS-PS1-5

What does Le Chatelier's Principle state about a system at equilibrium when it is subjected to a change in concentration, temperature, or pressure?

• The system will shift in the direction that increases the change.

• The system will remain unchanged.

• The system will shift in the direction that opposes the change.

• The system will shift in random directions until a new equilibrium is established.

Tags

NGSS.HS-PS1-5

Which of the following statements is TRUE regarding the effect of pressure on the equilibrium of a gaseous reaction?

• Increasing pressure always shifts the equilibrium to the side with more gas molecules

• Decreasing pressure always shifts the equilibrium to the side with fewer gas molecules

• Increasing pressure shifts the equilibrium to the side with fewer gas molecules

• Pressure has no effect on the equilibrium of a gaseous reaction

Which of the following is NOT true at equilibrium?

• The forward and reverse reactions proceed at the same rate.

• The concentrations of reactants and products do not change.

• The concentration of the reactants is equal to the concentration of the products.

• The forward and reverse reactions continue to occur.

Tags

NGSS.HS-PS1-6

For the reaction...
heat  +  N₂  +  O₂  <−>  2NO
If  O₂ is removed, the  concentration of N₂ will _______.

• increase

• decrease

• remain the same

• double

Tags

NGSS.HS-PS1-5

In the context of Le Chatelier's Principle, how does the addition of a catalyst affect a chemical equilibrium?

• It shifts the equilibrium to the right

• It shifts the equilibrium to the left

• It does not shift the equilibrium but increases the rate at which equilibrium is achieved

• It increases the equilibrium constant

Tags

NGSS.HS-PS1-6