AP Chemistry · Unit 7: Equilibrium

7.9 Introduction to Le Châtelier’s Principle

In short

You are expected to use Le Châtelier’s principle to predict the response of a system to stresses. These stresses include the addition or removal of a chemical species, changes in temperature, changes in volume or pressure of a gas-phase system, or the dilution of a reaction system.

Last updated

What else do you need to know about Introduction to Le Châtelier’s Principle?

Furthermore, you must be able to predict the effect that a stress will have on experimentally measurable properties such as pH, temperature, and the color of a solution.

Can you do these?

  • I can predict the response of a system to stresses such as addition or removal of a chemical species, change in temperature, change in volume/pressure, or dilution using Le Châtelier’s principle.
  • I can predict the effect that a stress will have on experimentally measurable properties such as pH, temperature, and color of a solution.

How is Introduction to Le Châtelier’s Principle tested on the exam?

Questions may require you to apply the suggested skill of Argumentation (6.F) to explain the connection between experimental results and chemical concepts, processes, or theories.

Practice this topicComing soon

Free practice questions with full explanations, and instant marking of your free-response answers.

Introduction to Le Châtelier’s Principle: common questions

What do you need to know about Introduction to Le Châtelier’s Principle for AP Chemistry?

You are expected to use Le Châtelier’s principle to predict the response of a system to stresses. These stresses include the addition or removal of a chemical species, changes in temperature, changes in volume or pressure of a gas-phase system, or the dilution of a reaction system.

How is Introduction to Le Châtelier’s Principle tested on the AP Chemistry exam?

Questions may require you to apply the suggested skill of Argumentation (6.F) to explain the connection between experimental results and chemical concepts, processes, or theories.

How do I know I have mastered Introduction to Le Châtelier’s Principle?

Check you can do each of these: predict the response of a system to stresses such as addition or removal of a chemical species, change in temperature, change in volume/pressure, or dilution using Le Châtelier’s principle; predict the effect that a stress will have on experimentally measurable properties such as pH, temperature, and color of a solution.

Where does Introduction to Le Châtelier’s Principle fit in AP Chemistry?

Introduction to Le Châtelier’s Principle is topic 7.9 in Unit 7: Equilibrium of AP Chemistry.

Want help mastering this topic?

Work through Introduction to Le Châtelier’s Principle one-on-one with an AP Guru tutor.

Book a free demo class