Chemical Equilibrium

Dynamic equilibrium, Kc/Kp, reaction quotient Q, Le Châtelier, and the extent of reaction.

Intended level

Advanced — after Kinetics.

Prerequisites

• chemical-kinetics

Ordered lessons

1. dynamic equilibrium kc kp q
2. le chatelier
3. ksp introduction

Related formulas and calculators

• $equilibrium-constant-kc$ — see Formula: equilibrium-constant-kc
• $reaction-quotient-q$ — see Formula: reaction-quotient-q
• $le-chatelier-prediction$ — see Formula: le-chatelier-prediction
• $ksp-expression$ — see Formula: ksp-expression
• equilibrium-constant
• le-chatelier

Only links to real, published tools are shown. Placeholders are not linked.

Common misconceptions

• At equilibrium concentrations are equal.
• K changes with pressure when Δn=0.
• Le Châtelier creates new equilibrium constant.

Related resources

• Constants — sourced physical constants with version stamps.
• Laboratory Safety — PPE, hazards, RAMP.
• Glossary — definitions for key terms in this topic.
• Sources and Data — how sources are versioned and cited.

Curriculum mappings

This topic maps to external frameworks stored in src/content/curriculum/. Never implies official affiliation.

• AP Chemistry 1.1 / IB Chemistry 2.1 (see /curriculum/ap-chem-1-1 and file src/content/curriculum/ap-chem-1-1.md).
• Framework version and source URL recorded per mapping; review date 2026-08-21.

Review and source metadata

• Author: Chemistry Fundamentals Editorial Team (chem-team)
• Reviewer: Dr. Example Reviewer (chemistry reviewer — transparent placeholder, see /editorial-policy)
• Last reviewed: 2026-08-21
• Review due: 2027-08-21
• Sources: NIST Reference Placeholder (nist-2022, 2022-CODATA). Placeholder reference — replace with actual sourced reference per lesson.

Printable summary

Summary card (PDF) — coming soon — print styles preserve equations and tables.

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