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In the Acid–Base Titrations Inquiry Lab Solution for AP® Chemistry, students conduct a series of acid–base titrations and determine the concentrations of two unknowns.
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.
This item can only be shipped to schools, museums and science centers
Big Idea 6, Investigation 14, Primary Learning Objective 6.13
Most products we use every day, including food, beverages, medication and cleaning solutions, have acidic and basic properties! The amount or concentration of acid or base in a sample may be determined by acid–base titration.
In this advanced-inquiry lab, students conduct a series of acid–base titrations and determine the concentrations of two unknowns. The lab begins with an introductory activity in which students qualitatively analyze an acid and base using pH paper. This activity provides a model for a guided-inquiry experiment, during which students collect quantitative titration data using a buret and pH meter. Each group uses two acids and two bases. One of the acids will have a known molarity and the other will have an unknown molarity. The same applies to the two bases. Students will graph titration curves from the collected data and determine the concentration of each unknown. A variety of acids and bases, strong and weak, are provided for the class to perform different combinations of titrations.
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. A version of this lab is available as a Wet/Dry Advanced Inquiry Laboratory Kit for One Period (Catalog No. AP8945).
Materials Included in Kit:
Acetic acid solution, 0.1 M, 500 mL
Ammonia water solution, 0.2 M, 500 mL, 2
Calcium hydroxide, reagent, 50 g
Hydrochloric acid solution, 0.2 M, 500 mL
Methyl red indicator solution, 50 mL
Nitric acid solution, 0.05 M, 500 mL
Phenolphthalein solution, dropper bottle, 1%, 30 mL
Sodium hydroxide solution, 0.1 M, 500 mL, 2
Sulfuric acid solution, 0.1 M, 500 mL
Thymolphthalein solution, 0.04%, 30 mL
Hydrion® 1–12 pH test strips
Additional Materials Required (for each lab group): Distilled or deionized water, beakers, 50-mL buret, graduated cylinders, magnetic stirrer and stir bar or stirring rod, pH sensor or pH meter, support stand and buret clamp, 16 x 150 mm test tubes, test tube rack, wash bottle.
Flinn Advanced Inquiry Laboratory Kits for AP* Chemistry