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Equilibrium/Le Chatelier’s Principle

Equilibrium/Le Chatelier’s Principle
Contributors
Mollie Enright
Beyond Benign, Inc.
Annette Sebuyira
Retired K-12 Educator | Beyond Benign, Inc.
Janie Butler
Education and Workforce Development Specalist | Science Done Sustainably
Beyond Benign
Beyond Benign, Inc.
Learning Objets
Summary
Green chemistry principles emphasize the importance of sustainability in chemical processes and aim to reduce the environmental impact of chemistry. One way to apply these principles is by using equilibrium experiments and Le Chatelier's Principle with environmentally friendly reagents that are minimally toxic. In the past, these principles have been demonstrated using chemicals that change color as the equilibrium position shifts. However, there are now several green reagents available that can be used instead
Keywords
Chemical Equilibrium
Le Chatelier's Principle
Acid-Base Chemistry
Chemical Reactions

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Moderation state
Published
Object Type
Laboratory experiment
Audience
High School (Secondary School)
Published on
Green Chemistry Principles
Less Hazardous Chemical Syntheses
Designing Safer Chemicals
Use of Renewable Feedstocks
Real-Time Pollution Prevention
Safer Chemistry for Accident Prevention
NGSS Standards, if applicable
• HS-PS1-6. Refine the design of a chemical system by specifying a change in conditions that would produce increased amounts of products at equilibrium.
Learning Goals/Student Objectives
Students will:
• Explain the concept of chemical equilibrium
• Distinguish between static and dynamic equilibrium
• Understand Le Chatelier’s Principle
• Describe how to set up an experiment that is in chemical equilibrium
• Predict the effect of adding a stress to the system at equilibrium
Common pedagogies covered
Hands-on learning
Time required (if applicable)
One x 45-minute class period

Submitted by

Sarah Prescott
Safety Precautions, Hazards, and Risk Assessment
Safety Information:
• Safety glasses should be worn whenever working in the lab.
• Iodine is a minor eye irritant, and vinegar and ammonia can cause skin irritation. Individuals with sensitive skin should wear gloves.

Disposal:
• Acids/bases should be neutralized before disposal.
• Materials are safe to go down the drain.
• Always follow state and district rules for discarding laboratory materials.
Digital Object Identifier (DOI)
https://doi.org/10.59877/JGET5365

File (PDF, PPT, image, etc)

File (PDF, PPT, image, etc)
equilibrium_lechateliers_principle_1.docx
Creative Commons License
Creative Commons License
This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.