AP CHEM Unit 2 Day 4

Front

What is the equilibrium expression for a reaction?

Back

The equilibrium expression is a mathematical representation of the ratio of the concentrations of products to reactants at equilibrium, each raised to the power of their coefficients in the balanced equation.

Front

What does it mean when K (equilibrium constant) is less than 1?

Back

When K < 1, it indicates that at equilibrium, the concentration of reactants is greater than that of products, suggesting that the reaction favors the reactants.

Front

What does it mean when K (equilibrium constant) is greater than 1?

Back

When K > 1, it indicates that at equilibrium, the concentration of products is greater than that of reactants, suggesting that the reaction favors the products.

Front

How does adding more reactants affect the position of equilibrium?

Back

Adding more reactants shifts the equilibrium position to the right, favoring the formation of products.

Front

How does removing products affect the position of equilibrium?

Back

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

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

Back

Increasing the temperature in an exothermic reaction shifts the equilibrium to the left, favoring the reactants.

Front

What happens to equilibrium when temperature is decreased in an endothermic reaction?

Back

Decreasing the temperature in an endothermic reaction shifts the equilibrium to the left, favoring the reactants.

Front

What is the significance of a very large K value (e.g., K = 10^80)?

Back

A very large K value indicates that the reaction strongly favors the formation of products at equilibrium.

Front

What is the significance of a very small K value (e.g., K = 0.01)?

Back

A very small K value indicates that the reaction strongly favors the reactants at equilibrium.