Lab-Aids:‚ Changing of Equilibrium (Le Chatelier's Principle) Kit
According to Le Chatelier's Principle, if stress is applied to any system of reactions at equilibrium, the equilibrium will adjust or shift itself in such a direction so as to reduce the effect (or relieve the stress) of any change in conditions. In this series of activities, students put Le Chatelier's Principle to the test. They learn the four important factors that can disturb the equilibrium of a chemical reaction: concentration, pressure, temperature and light. Your students will discover that chemical reactions do not always go to completion and that all are somewhat reversible. Students encourage one of two simultaneous chemical reactions which cause the equilibrium of the mixture to change. This Lab-Aid is complete for 50 students.
Test Le Chatelier's Principle
Discover that many chemical reactions do not go to completion
Investigate a system at equilibrium and study the effect of changes
1Teachers Guide with MSDS
50Student Worksheets and Guides
2Drop control bottles of Barium Nitrate
2Drop control bottles of Sodium hydroxide, dilute
2Drop control bottles of Hydrochloric acid, dilute
2Drop control bottles of Potassium chromate and dichromate
To complete this kit requires one ~50-minute class period.