Front

What is Le Chatelier's Principle?

Back

Le Chatelier's Principle states that if a dynamic equilibrium is disturbed by changing the conditions, the position of equilibrium shifts to counteract the change and restore a new equilibrium.

Tags

NGSS.HS-PS1-5

Front

What happens to equilibrium when a reactant is removed?

Back

The equilibrium shifts towards the reactants to replace the removed substance.

Front

What happens to equilibrium when a product is removed?

Back

The equilibrium shifts towards the products to replace the removed substance.

Tags

NGSS.HS-PS1-6

Front

How does increasing temperature affect an exothermic reaction at equilibrium?

Back

Increasing temperature shifts the equilibrium to the left, towards the reactants.

Tags

NGSS.HS-PS1-6

Front

How does increasing temperature affect an endothermic reaction at equilibrium?

Back

Increasing temperature shifts the equilibrium to the right, towards the products.

Tags

NGSS.HS-PS1-6

Front

What effect does increasing pressure have on gaseous equilibria?

Back

Increasing pressure shifts the equilibrium towards the side with fewer moles of gas.

Front

What is the effect of adding an inert gas to a reaction at equilibrium?

Back

Adding an inert gas at constant volume does not affect the position of equilibrium.

Front

What happens to equilibrium when the concentration of a reactant is increased?

Back

The equilibrium shifts to the right, towards the products.

Tags

NGSS.HS-PS1-5

Front

What happens to equilibrium when the concentration of a product is increased?

Back

The equilibrium shifts to the left, towards the reactants.

Front

What is the role of catalysts in chemical reactions at equilibrium?

Back

Catalysts speed up the rate of both the forward and reverse reactions equally, but do not affect the position of equilibrium.