Classroom Resources: Equilibrium
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Le Châtelier's Principle, Establishing Equilibrium, Equilibrium Constants  High School
Demonstration: Le Châtelier’s Principle and Shifting Equilibrium Mark as Favorite (10 Favorites)
In this demonstration, students will be introduced to the concepts of Le Châtelier’s Principle and reversible reactions through the formation of a copperammonia complex ion.

Equilibrium Constants, Le Châtelier's Principle  High School
Activity: How do Pollutants Affect our Oceans? Mark as Favorite (26 Favorites)
In this activity, students will use the simulation, Surface Ocean pH Levels, from the Chemistry in Context Simulation Suite to investigate the values related to ocean acidification and interpret systems with multiple equilibria.

Review, Culminating Project, Mixtures, Separating Mixtures, Beer's Law, Concentration, Redox Reaction, Half Reactions, pH, Titrations, Buffers, Indicators, Ionic Bonding, Covalent Bonding, Alloys, Percent Composition, Le Châtelier's Principle, Enthalpy, Calorimetry, Conductivity  High School
Lesson Plan: AP Chemistry Experimental Evidence Review Mark as Favorite (69 Favorites)
In this lesson, students will evaluate data from 16 simulated lab experiments that were designed to mirror the Recommended Labs from the College Board. Corresponding lab experiments and demonstration options have also been included for teacher reference.

Equilibrium Constants, Le Châtelier's Principle, Gibb's Free Energy , Enthalpy, Entropy, Solubility  High School
Lesson Plan: Relationship Between Free Energy and the Equilibrium Constant Mark as Favorite (14 Favorites)
In this lesson, students will explore the relationships between solubility and Keq (specifically Ksp), as well as Keq and ΔG°. First, a guided inquiry activity will introduce the relationship between standard free energy and equilibrium constant with the equation ΔG° = RTlnKeq. Then data collection regarding solubility of potassium nitrate at various temperatures will lead to the calculation of Ksp and ΔGo for the dissolution reaction at those temperatures. Students will manipulate the equations ΔG° = RTlnKeq and ΔG° = ΔH°  TΔS° to derive a linear relationship between 1/T and lnKeq, which will then be graphed to determine values for ΔH° and ΔS°.

Le Châtelier's Principle, Equilibrium Constants, Establishing Equilibrium, Reaction Quotient  High School
Activity: Le Châtelier's Principle Particulate View Mark as Favorite (15 Favorites)
In this activity, students will gain a better understanding of how applying a stress to a reaction system will shift the equilibrium. The students will be able to predict the direction a reversible reaction will shift based of the value of the reaction quotient (Q) and the equilibrium constant (K). This activity should be completed after students have completed the activity “Equilibrium Particulate View.”

Le Châtelier's Principle, Establishing Equilibrium  High School
Lab: A Greener Le Châtelier’s Principle Lab Mark as Favorite (49 Favorites)
In this lab, students will explore Le Châtelier’s Principle using nontoxic materials, while still visualizing the equilibrium shifts through color changes. Traditionally, equilibrium experiments and Le Châtelier’s Principle are illustrated using chemicals that undergo color changes as the equilibrium position shifts such as cobalt (IV) chloride and iron (III) thiocyanate. While these reactions effectively demonstrate Le Châtelier’s Principle, they utilize reagents that are toxic.

Establishing Equilibrium, Equilibrium Constants, Le Châtelier's Principle, Reaction Quotient  High School
Lesson Plan: Equilibrium Unit Plan Mark as Favorite (22 Favorites)
The AACT high school classroom resource library and multimedia collection has everything you need to put together a unit plan for your classroom: lessons, activities, labs, projects, videos, simulations, and animations. We constructed a unit plan using AACT resources that is designed to teach equilibrium to your students.

Equilibrium Constants, Reaction Quotient, Le Châtelier's Principle  High School
Lesson Plan: Q, K, and Le Chatelier Mark as Favorite (14 Favorites)
In this lesson students practice applying Q vs K as an explanatory tool in a simulation and demonstration. In both activities, students will consider how a change in concentration of one species subsequently effects all the species as equilibrium is reestablished.

Equilibrium Constants, Le Châtelier's Principle, Reaction Quotient  High School
Activity: Equilibrium in a Beaker Mark as Favorite (68 Favorites)
In this activity, students will model equilibrium reactions using plastic chips to represent atoms. The goal of the lesson is to connect the symbolic model of an equilibrium reaction to its particle model.

Reaction Rate, Activation Energy, Hess's Law, Exothermic & Endothermic, Le Châtelier's Principle  High School
Lab: Kinetics and Equilibrium Mark as Favorite (25 Favorites)
In this lab, students will investigate the reaction of the hydrogen sulfite ion (HSO3) and the iodate ion (IO3) to determine the effect that changing concentration and temperature has on the reaction rate.

Establishing Equilibrium, Le Châtelier's Principle, Equilibrium Constants, Reaction Quotient  High School
Lesson Plan: Discovering Equilibrium Mark as Favorite (27 Favorites)
In this lesson students manipulate sets of given conditions to discover what equilibrium is, and how the equilibrium is established from different starting conditions. Students then refer back to the activity as the foundation framework for the rest of Essential Knowledge 6.A, 6.B.1 and 6.B.2. This lesson focuses on both a qualitative and quantitative understanding of equilibrium.

Establishing Equilibrium, Le Châtelier's Principle  High School
Simulation: Predicting Shifts in Equilibrium: Q vs K Mark as Favorite (32 Favorites)
In this simulation, students will take a 15 question quiz. Each quiz question has two parts. The first part requires the student to calculate the value of the reaction quotient, Q. In the second portion of the question, the students will compare the value of Q to the equilibrium constant, K, and predict which way the reaction will shift to reach equilibrium. The simulation includes five different reactions which each have three scenarios: Q > K, Q = K, and Q < K.

Establishing Equilibrium, Le Châtelier's Principle  High School
Activity: Simulation Activity: Predicting Shifts in Equilibrium: Q vs K Mark as Favorite (30 Favorites)
In this simulation, students will take a 15 question quiz. Each quiz questions has two parts. The first part requires the student to calculate the value of the reaction quotient, Q. In the second portion of the question, the students will compare the value of Q to the equilibrium constant, K, and predict which way the reaction will shift to reach equilibrium. The simulation includes five different reactions which each have three scenarios: Q > K, Q = K, and Q < K.

Le Châtelier's Principle, Reversible Reactions, Concentration  High School
Lab: Le Chatelier’s Soda Mark as Favorite (83 Favorites)
In this lab, students will observe how the equilibrium of a chemical reaction is affected when a change in pressure, temperature, and concentration is applied to the system.

Le Châtelier's Principle, Establishing Equilibrium, Equilibrium Constants, Reaction Quotient, Exothermic & Endothermic, Heat, Temperature  High School
Demonstration: Le Châtelier’s Principle Mark as Favorite (29 Favorites)
In this demonstration, students will witness a system at equilibrium and apply different stresses to see how the equilibrium shifts.

Activation Energy, Temperature, Exothermic & Endothermic, Heat, Equilibrium Constants, Establishing Equilibrium, Le Châtelier's Principle, Reaction Quotient  High School
Activity: Reversible Reactions Simulation Mark as Favorite (33 Favorites)
In this activity, students will investigate how temperature, activation energy, initial amounts of products and reactants, and type of reaction (exo or endothermic) effect the equilibrium position of a reaction using a simulation.

Indicators, Le Châtelier's Principle, Acid Base Reactions, Chemical Change, Chemical Change, Limiting Reactant, Reaction Rate, Observations, Chemical Change  High School
Demonstration: Milk of Magnesia Magic Mark as Favorite (86 Favorites)
In this demonstration, students will observe a color change in a milk of magnesia solution as vinegar is added.

Le Châtelier's Principle, Establishing Equilibrium, Reversible Reactions, Reaction Rate, Equilibrium Constants, Graphing  High School
Lab: Dynamic Equilibrium Simulation Mark as Favorite (33 Favorites)
In this lab, students will explore equilibrium using paper clips to mimic a chemical reaction.