FlinnPREP™ Inquiry Labs for AP® Chemistry: Applications of Le Chatelier’s Principle
By: The Flinn Staff
Item #: AP7659
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.
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.
Complete for 24 students working in pairs. Refill kit includes chemicals and consumable supplies.
Materials Included in Kit: Ammonium hydroxide reagent, 30 mL Bromcresol green solution, 0.04%, 35 mL Bromthymol blue solution, 0.04%, 20 mL Calcium chloride, 5 g Cobalt chloride hexahydrate, 1% in 95% ethyl alcohol, 100 mL Copper(II) sulfate solution, 0.2 M, 100 mL Hydrochloric acid solution 1 M, 15 mL Hydrochloric acid solution, 6 M, 20 mL Hydrochloric acid solution, 0.1 M, 25 mL Hydrochloric acid solution, 3 M, 250 mL Iron(III) nitrate solution 0.2 M, 125 mL Milk of magnesia, 150 mL Potassium nitrate, 15 g Potassium thiocyanate, 10 g Potassium thiocyanate solution, 0.1 M, 30 mL Seltzer water, bottle, 8 oz Silver nitrate solution, 0.1 M, 30 mL Sodium hydroxide solution, 0.1 M, 30 mL Sodium phosphate, monohydrate, 15 g Universal indicator solution, 20 mL Bromcresol green indicator color chart Culture (Petri) dish, 90 x 15 mm, 12 Pipet, Beral-type, graduated, 25 Syringe tip cap, 2 Syringe, disposable, 35 mL, 2
Additional Materials Required: Distilled or deionized water, beakers, graduated cylinders, hot plate, ice, labeling or marking pens, magnetic stir plate and stir bar (or stirring rod), test tube, test tube holder, test tube rack, thermometer, volumetric flask, wash bottle.