Le Chatelier's Principle

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

Increasing the pressure on the system will...

• shift equilibrium right

• shift equilibrium left

• slow rate of reaction

• have no change

What would happen when H₂O is added?

• Position of equilibrium will shift to left (and become more blue)

• Position of equilibrium will shift to right (and become more pink)

• K_eq will increase as H₂O is added

• Position of equilibrium will shift to left to reduce the added H₂O

Tags

NGSS.HS-PS1-5

When the pressure on the system is increased, the equilibrium position shifts to the right. Why?

• To increase the amount of products

• To reduce the pressure, as the right side has fewer molecules of gas

• K_eq will increase when it is shifted to the right

• To increase the pressure, as the right side has more molecules of gas

Le Chaltelier's Principle states that if a chemical system at equilibrium is stressed,

• the system will adjust to increase the stress

• the system will adjust to reduce the stress

• the system will not adjust

What is the effect of adding more reactant to a system at equilibrium?

• It will shift the equilibrium towards the products.

• It will shift the equilibrium towards the reactants.

• It will not affect the equilibrium position.

Tags

NGSS.HS-PS1-5

NGSS.HS-PS1-6

According to Le Chatelier's Principle, if the concentration of a reactant is increased, the equilibrium of the reaction will:

• Shift to the left, favoring the formation of reactants

• Shift to the right, favoring the formation of products

• Remain unchanged

• Increase the overall reaction rate without shifting the equilibrium

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

If the pressure of a system is increased, which direction will equilibrium shift?

• toward the side with less moles of gas

• toward the side with more moles of gas

• it will not shift