Lab-Aids: Changing of Equilibrium (Le Chatelier’s Principle) Kit

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. Scientific Concepts: 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 Content List: 1 Teachers Guide with MSDS 50 Student Worksheets and Guides 12 Chemplates‚® w/spatula 2 Drop control bottles of Barium Nitrate 2 Drop control bottles of Sodium hydroxide, dilute 2 Drop control bottles of Hydrochloric acid, dilute 2 Drop control bottles of Potassium chromate and dichromate Classroom Planning: To complete this kit requires one ~50-minute class period. Number of students: 50