Le Chatelier Quick Check

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.

Front

What effect does adding a catalyst have on a chemical reaction at equilibrium?

Back

Adding a catalyst increases the rate of reaction but does not change the position of equilibrium.

Front

Which factors affect the position of equilibrium?

Back

Concentration, pressure, and temperature affect the position of equilibrium.

Front

What happens to the equilibrium position when the concentration of reactants is increased?

Back

The equilibrium position shifts to the right, favoring the formation of products.

Front

What happens to the equilibrium position when the temperature is increased in an exothermic reaction?

Back

The equilibrium position shifts to the left, favoring the reactants.

Front

What is the effect of increasing pressure on a gaseous equilibrium?

Back

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

Front

What happens when a product is removed from a system at equilibrium?

Back

The equilibrium position shifts to the right to produce more products.

Front

What is the color change observed when CoCl4^2- is converted to Co(H2O)6^2+?

Back

The solution changes from blue (CoCl4^2-) to pink (Co(H2O)6^2+).

Front

What is the effect of adding Cl- ions to the equilibrium involving CoCl4^2-?

Back

The position of equilibrium shifts to the left to reduce the added Cl- ions, resulting in a more pink solution.

Front

What happens when OH- ions are added to the equilibrium involving CrO4^2- and H+?

Back

The position of equilibrium shifts to the left, resulting in a more yellow solution.