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.
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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.