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FlinnPREP™ Inquiry Labs for AP® Chemistry: Applications of Le Chatelier’s Principle

By: The Flinn Staff

The Applications of Le Chatelier’s Principle Inquiry Lab Solution for AP® Chemistry introduces students to equilibrium concepts. Six chemical equilibrium systems are analyzed with the corresponding patterns and trends.

Includes access to exclusive FlinnPREP™ digital content to combine the benefits of classroom, laboratory and digital learning. Each blended learning lab solution includes prelab videos about concepts, techniques and procedures, summary videos that relate the experiment to the AP® exam, built-in student lab safety training with assessments, and standards-based, tested inquiry labs with real sample data. FlinnPREP™ Inquiry Lab Solutions are adaptable to you and how you teach with multiple ways to access and run your AP® labs.

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Big Idea 6, Investigation 13, Primary Learning Objective 6.9

What happens when the equilibrium is disturbed? Students investigate six chemical equilibrium systems to analyze patterns and trends in the principles, concepts and definitions of equilibrium.

Students begin with an activity that introduces the properties of a system at equilibrium: the reversible complex-ion reaction between iron(III) nitrate and potassium thiocyanate. Deliberate “stresses” are added to the system and students analyze the resulting color changes. This procedure provides a model for guided-inquiry analysis of five additional equilibrium systems. Inquiry activities include a reversible acid–base indicator reaction, copper and cobalt complex ions, gas–liquid solubility of carbon dioxide and the solubility of magnesium hydroxide. For convenience, these systems may be set up as lab stations.  

FLINNprep is just one of the powerful learning pathways accessed via PAVO, Flinn’s award-winning gateway to standards-aligned digital science content paired with hands-on learning.

Complete for 24 students working in pairs. Refill kit includes chemicals and consumable supplies.