AP Chemistry - Unit 7 - Thou Shall Not Forget

Front

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

Back

The equilibrium shifts towards the reactants.

Front

At equilibrium, how do the rates of the forward and reverse reactions compare?

Back

The rates of the forward and reverse reactions are the same.

Front

What is the effect on the equilibrium constant (K) when the coefficients of a reaction are multiplied by a factor x?

Back

The K value is raised to the power x.

Front

What must a system at equilibrium contain?

Back

A system at equilibrium must have both reactants and products.

Front

What is the equilibrium constant expression (Kc) for the reaction aA + bB ⇄ cC + dD?

Back

Front

What is an endothermic reaction?

Back

An endothermic reaction is a chemical reaction that absorbs heat from its surroundings.

Front

What is an exothermic reaction?

Back

An exothermic reaction is a chemical reaction that releases heat to its surroundings.

Front

What does Le Chatelier's principle state?

Back

Le Chatelier's principle states that if a system at equilibrium is subjected to a change in concentration, temperature, or pressure, the system will adjust to counteract that change.

Front

How does increasing the concentration of reactants affect the equilibrium position?

Back

Increasing the concentration of reactants shifts the equilibrium position towards the products.

Front

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

Back

The equilibrium constant (K) indicates the ratio of the concentrations of products to reactants at equilibrium.