Le Chatelier

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 factors affect the position of equilibrium?

Back

The position of equilibrium can be affected by concentration, pressure, and temperature.

Front

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

Back

The equilibrium will shift to the right, favoring the formation of products.

Front

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

Back

The equilibrium will shift to the left, favoring the reactants.

Front

What happens to equilibrium when the pressure is increased in a gaseous reaction?

Back

The equilibrium will shift towards the side with fewer moles of gas.

Front

What is the effect of removing a product from a reaction at equilibrium?

Back

Removing a product will shift the equilibrium to the right, favoring the formation of more products.

Front

What is the effect of adding a catalyst to a reaction at equilibrium?

Back

Adding a catalyst does not change the position of equilibrium; it only speeds up the rate at which equilibrium is reached.

Front

What is an example of a color change in a reaction at equilibrium?

Back

In the reaction 2CrO4^2- + 2H+ → Cr2O7^2- + H2O, adding H+ ions shifts the equilibrium to the right, changing the color from yellow to orange.

Front

What is the significance of the equilibrium constant (K)?

Back

The equilibrium constant (K) quantifies the ratio of concentrations of products to reactants at equilibrium at a given temperature.

Front

What does it mean if K is much greater than 1?

Back

If K is much greater than 1, it indicates that at equilibrium, the concentration of products is much greater than that of reactants.