Synthesis, Isolation and Purification of an Ester—Classic Lab Kit for AP® Chemistry
By: The Flinn Staff
Item #: AP9094
With the Synthesis, Isolation and Purification of an Ester Classic Lab Kit for AP® Chemistry, students perform a quantitative esterification reaction. Students receive hands-on experience with common organic chemistry techniques.
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Classic AP Requirement #22—Synthesis, Purification and Analysis of an Organic Compound
Students perform a quantitative esterification reaction to produce ethyl acetate. The lab consists of three parts—in Part 1 the ethyl acetate is prepared, in Part 2 the ethyl acetate is purified, and in Part 3 tests are performed to verify the identity of the ethyl acetate. The theoretical yield is then calculated and the percent yield is determined.
Students receive hands-on experience with common organic chemistry techniques, such as refluxing, extractions and distillation.
Complete for 24 students working in pairs.
Synthesis, Isolation and Purification of an Ester 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:
Acetic acid, glacial, 150 mL
Ethyl alcohol, anhydrous, 120 mL
Sodium carbonate, 60 g
Sulfuric acid, reagent, 50 mL
Foil barrier bag, 4½" x 3" x 12" x 4.3 mil nylon
Additional Materials Required (for each lab group): distilled or deionized water, beakers, boiling stones, capillary dropper, clamps, condenser, condenser outlet adapter, Erlenmeyer flask, ground glass joint grease, hot plate, plastic tubing for condenser, cooling water, round-bottom flask, rubber bands, support stand, thermometer and adapter, three-way adapter. Option 1: Separatory funnel or test tube, 18 × 125 mm, with stopper. Option 2: Test tube, 15 × 150 mm with stopper.
*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
Planning and carrying out investigations
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
Structure and function
Stability and change
HS-PS1-3. Plan and conduct an investigation to gather evidence to compare the structure of substances at the bulk scale to infer the strength of electrical forces between particles.
HS-PS1-7. Use mathematical representations to support the claim that atoms, and therefore mass, are conserved during a chemical reaction.
HS-PS2-6. Communicate scientific and technical information about why the molecular-level structure is important in the functioning of designed materials.