Le Chatelier and Equilibrium

When the rate of the forward reaction is equal to the rate of backward reaction, the system is said to be in

• Chemical Equilibrium

• Chemical Balance

• Stoichiometry

• Chemical Reaction

Tags

NGSS.HS-PS1-6

If I want to make MORE SO3, how could I stress the reaction so that it wants to make more SO3? (think about how it will need to fix itself!)

• Add SO₃

• Add SO₂

• Remove O₂

• Add heat to one side

Tags

NGSS.HS-PS1-5

2SO₂(g)+O₂(g) ⇌ 2SO₃(g) + Heat

Increasing the temperature will...

• shift equilibrium right

• shift equilibrium left

• increase pressure

• have no change

Tags

NGSS.HS-PS1-5

2SO₂(g)+O₂(g) ⇌ 2SO₃(g) + Heat

Adding SO₃(g) will

• shift equilibrium right

• shift equilibrium left

• increase K

• have no change

2SO₂(g) + O₂(g) ⇌ 2SO₃(g) + Heat

Using a catalyst

• shift equilibrium right

• shift equilibrium left

• increase the rate of reaction

• have no change

What are the two factors to look for when determining if the reaction is at equilibrium?

• The concentrations of the reactants and products are equal

• Forward and reverse reaction rates are the same

• Forward reaction rate is faster than the reverse and concentration is equal

Tags

NGSS.HS-PS1-6

What happens to the equilibrium if we add hydrogen (H₂)?

• It shifts left, towards the reactants

• It shifts right, towards the products

• It does not shift

Tags

NGSS.HS-PS1-5

This symbol indicates that a reaction is ____________

• reversible

• irreversible

At what time does the reaction reach equilibrium?

• t₁

• t₂

• t₃

• t₄

This Law "states that any change to system at equilibrium will result in an expected shift that counteracts the change"

• Le Chatelier's Principle

• Boyles Law

• Law of thermodynamics