---
title: "Unit 7 – Equilibrium - AP Chemistry"
description: "Review Unit 7 – Equilibrium for AP Chemistry with Fiveable study guides and practice resources."
canonical: "https://fiveable.me/ap-chem/unit-7"
type: "unit"
subject: "AP Chemistry"
unit: "Unit 7 – Equilibrium"
---
# Unit 7 – Equilibrium - AP Chemistry
## Overview
Review Unit 7 – Equilibrium for AP Chemistry with Fiveable study guides and practice resources.
## Study Guides
- [7.10 Reaction Quotient and Le Châtelier’s Principle](/ap-chem/unit-7/reaction-quotient-le-chateliers-principle/study-guide/JFx1InPfZCZ9SugPKDCE)
- [7.6 Properties of the Equilibrium Constant](/ap-chem/unit-7/properties-equilibrium-constant/study-guide/PGLxCyabBaR6axW5E18w)
- [8.11 pH and Solubility](/ap-chem/unit-7/ph-solubility/study-guide/QD1VMGuBFQJ1Rcw5ifOV)
- [7.2 Direction of Reversible Reactions](/ap-chem/unit-7/direction-reversible-reactions/study-guide/QKsYOmy4YBiELg6YUHOv)
- [7.9 Introduction to Le Châtelier’s Principle](/ap-chem/unit-7/intro-le-chateliers-principle/study-guide/ST8UE6kcdhi0hkA5bSkN)
- [7.4 Calculating the Equilibrium Constant](/ap-chem/unit-7/calculating-equilibrium-constant/study-guide/WMmdcS9qD8yHDQwepK31)
- [7.3 Reaction Quotient and Equilibrium Constant](/ap-chem/unit-7/reaction-quotient-equilibrium-constant/study-guide/Y12LZEr3OWIAqV3gErat)
- [7.5 Magnitude of the Equilibrium Constant](/ap-chem/unit-7/magnitude-equilibrium-constant/study-guide/dvXT7PLceyYd2QH8KiV4)
- [7.1 Introduction to Equilibrium](/ap-chem/unit-7/intro-equilibrium/study-guide/dzIPBIOsEPKoTL4VKEH2)
- [7.11 Introduction to Solubility Equilibria](/ap-chem/unit-7/intro-solubility-equilibria/study-guide/lkqnvEmZIxrvjX1sogng)
- [7.7 Calculating Equilibrium Concentrations](/ap-chem/unit-7/calculating-equilibrium-concentrations/study-guide/ou9xNlxg758Auz6D3WIO)
- [7.14 Free Energy of Dissolution](/ap-chem/unit-7/free-energy-dissolution/study-guide/tsCK6wFJQBajLTmMNv44)
- [7.8 Representations of Equilibrium](/ap-chem/unit-7/representations-equilibrium/study-guide/wLQChBkGSKiEP5xvlXB8)
- [7.12 Common Ion Effect](/ap-chem/unit-7/common-ion-effect/study-guide/z1tr3Mg2Afz6kj9yQGtc)
## FAQs
### What topics are covered in AP Chem Unit 7?
AP Chem Unit 7 covers 12 topics on equilibrium: Introduction to Equilibrium, Direction of Reversible Reactions, Reaction Quotient and Equilibrium Constant, Calculating the Equilibrium Constant, Magnitude of the Equilibrium Constant, Properties of the Equilibrium Constant, Calculating Equilibrium Concentrations, Representations of Equilibrium, Introduction to Le Châtelier's Principle, Reaction Quotient and Le Châtelier's Principle, Introduction to Solubility Equilibria, and Common-Ion Effect. The unit builds from the concept of dynamic equilibrium up through predicting how systems shift under stress. You'll work with K expressions, ICE tables, Q vs. K comparisons, and Ksp calculations. See [AP Chem Unit 7](/ap-chem/unit-7) for topic-by-topic breakdowns.
### How much of the AP Chem exam is Unit 7?
Unit 7 makes up 7-9% of the AP Chem exam. That weight covers everything from writing equilibrium constant expressions and calculating K to applying Le Châtelier's principle and solving solubility equilibria problems. It's a focused unit, but the concepts show up in calculation-heavy multiple-choice and free-response questions.
### What's on the AP Chem Unit 7 progress check (MCQ and FRQ)?
The AP Chem Unit 7 progress check includes MCQ and FRQ parts drawn from all 12 equilibrium topics. MCQ questions test your ability to interpret Q vs. K, predict reaction direction, and identify how Le Châtelier's principle applies to concentration, temperature, and volume changes. FRQ questions typically ask you to set up ICE tables, calculate equilibrium concentrations, write Ksp expressions, or explain shifts using Le Châtelier's principle. The progress check pulls heavily from topics like Reaction Quotient and Equilibrium Constant (7.3), Calculating Equilibrium Concentrations (7.7), Introduction to Le Châtelier's Principle (7.9), and Introduction to Solubility Equilibria (7.11). Practicing those topics first gives you the most progress check coverage. Head to [AP Chem Unit 7](/ap-chem/unit-7) for matched practice on each topic.
### How do I practice AP Chem Unit 7 FRQs?
AP Chem Unit 7 FRQs most often come from three areas: calculating equilibrium concentrations using ICE tables, applying Le Châtelier's principle to explain system shifts, and solving solubility equilibria problems with Ksp. Questions usually ask you to show your setup, not just a final answer, so writing out every step of an ICE table or Ksp calculation matters. To practice effectively, work through past College Board FRQs that involve equilibrium constant expressions and reaction quotient comparisons. Focus on explaining your reasoning in full sentences when the prompt says 'justify' or 'explain.' You can find topic-aligned FRQ practice at [AP Chem Unit 7](/ap-chem/unit-7).
### Where can I find AP Chem Unit 7 practice questions?
The best place to find AP Chem Unit 7 practice questions, including multiple-choice and practice test sets, is [AP Chem Unit 7](/ap-chem/unit-7). That page organizes practice by topic so you can target equilibrium constant calculations, reaction quotient problems, Le Châtelier's principle scenarios, and solubility equilibria separately. For MCQ practice, look for questions that give you a reaction and ask whether Q is greater than, less than, or equal to K. For a practice test experience, work through a full set of Unit 7 questions timed, then review any ICE table or Ksp problems you missed.
### How should I study AP Chem Unit 7?
Start AP Chem Unit 7 by building a solid understanding of what equilibrium means physically: a dynamic state where forward and reverse reaction rates are equal. Once that clicks, the math follows more naturally. Here's a practical study order: 1. **Learn K expressions first.** Practice writing equilibrium constant expressions for gases and solutions before touching calculations.
2. **Master the Q vs. K comparison.** Knowing whether the reaction quotient Q is less than, greater than, or equal to K tells you which direction a reaction shifts. This shows up constantly.
3. **Work ICE tables by hand.** Set up and solve at least 10 ICE table problems for Calculating Equilibrium Concentrations (7.7). Speed and accuracy here pay off on FRQs.
4. **Study Le Châtelier's principle with real examples.** Practice predicting shifts for concentration changes, temperature changes, and volume changes separately.
5. **Finish with solubility equilibria.** Ksp problems and the Common-Ion Effect (7.12) build on everything above, so save them for last. Visit [AP Chem Unit 7](/ap-chem/unit-7) for topic-by-topic resources that follow this order.
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