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19.3: The Effect of Applying Stress to Reactions at Equilibrium

Difficulty Level: At Grade Created by: CK-12
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Student Behavioral Objectives

The student will:

  • state Le Châtelier’s Principle.
  • demonstrate on specified chemical reactions how Le Châtelier’s Principle is applied to equilibrium systems.
  • describe the effect of concentration on an equilibrium system.
  • demonstrate with specific equations how Le Châtelier’s Principle explains the effect of concentration.
  • describe the effect of pressure as a stress on the equilibrium position.
  • describe the pressure effect in Le Châtelier’s Principle.
  • describe the effect of temperature as a stress on an equilibrium system.
  • explain how Le Châtelier’s principle explains the effect of temperature.
  • explain how a catalyst works in equilibrium reactions.
  • explain the effect of a catalyst in equilibrium positions.

Timing, Standards, Activities

Timing and California Standards
Lesson Number of 60 min periods CA Standards
The Effect of Applying Stress to Reactions at Equilibrium 2.0 9a

Activities for Lesson 3

Laboratory Activities

1. Solution Equilibria Lab


1. Equilibrium Between Nitrogen Dioxide and Dinitrogen Tetroxide


1. Le Chatelier's Principle Worksheet

Extra Readings

1. None

Answers for The Effect of Applying Stress to Reactions at Equilibrium (L3) Review Questions

  • Sample answers to these questions are available upon request. Please send an email to teachers-requests@ck12.org to request sample answers.

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    Aug 18, 2012
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