Item #: AP9083
The Acid–Base Titrations Classic Lab Kit for AP® Chemistry provides the recommended familiarity with the titration process using indicators and pH meters. This three-part laboratory will truly test students’ adherence to lab procedures.
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Classic AP Requirement #6—Standardization of a Solution Using a Primary Standard
Classic AP Requirement #7—Determination of Concentration by Acid–Base Titration, Including a Weak Acid or a Weak Base
In this three-part laboratory, a basic solution is first standardized against a known solid acid (KHP). This standardized base solution is then titrated against an unknown acid solution to determine the acid solution’s molarity. In the third part, the Ka of the solid acid KHP is calculated from the data of the titration curve obtained from plotting the pH of the solution versus the volume of NaOH solution added. The lab provides the recommended familiarity with the process of titration using indicators and pH meters.
Complete for 24 students working in pairs.
Acid–Base Titrations Inquiry Guidance and AP® Chemistry Curriculum Alignment Transition Guide available! Follow the link in Resources to find this valuable publication that lets you adapt this classic AP Chemistry experiment for guided-inquiry and correlate with the AP Chemistry curriculum framework.
Materials Included in Kit:
Phenolpthalein solution, 1%, 100 mL
Potassium bitartrate, 25 g
Potassium hydrogen phthalate, 25 g
Sodium hydroxide, 1 M, 350 mL
Additional Materials Required (for each lab group): 0.001- or 0.0001-g precision balance to share, beakers, pH 7 buffer solution, burets, buret clamps, desiccator, distilled or deionized water, Erlenmeyer flasks, funnels, graduated cylinder, magnetic stirrers and stir bars, pH meters, support stands, volumetric flask, wash bottles, weighing dishes.
*Advanced Placement and AP are registered trademarks of the College Board, which was not involved in the production of, and does not endorse, these products.
Correlation to Next Generation Science Standards (NGSS)†
Science & Engineering Practices
Asking questions and defining problems
Developing and using models
Planning and carrying out investigations
Analyzing and interpreting data
Using mathematics and computational thinking
Obtaining, evaluation, and communicating information
Disciplinary Core Ideas
HS-PS1.A: Structure and Properties of Matter
HS-PS1.B: Chemical Reactions
Cause and effect
Scale, proportion, and quantity
Systems and system models
Stability and change
HS-PS1-2. Construct and revise an explanation for the outcome of a simple chemical reaction based on the outermost electron states of atoms, trends in the periodic table, and knowledge of the patterns of chemical properties.
HS-PS1-7. Use mathematical representations to support the claim that atoms, and therefore mass, are conserved during a chemical reaction.