Aspirin Synthesis and Crystallization

The video tutorial demonstrates the synthesis of aspirin, starting with the weighing of salicylic acid and mixing it with acetic anhydride. Sulfuric acid is added to catalyze the reaction, which is then heated. After cooling, aspirin crystals form and are filtered out. The aspirin is recrystallized for purity, and the final product is dried and weighed.

What is the scientific name for aspirin?

• Sulfuric acid

• Salicylic acid

• Acetic anhydride

• Aetos salic acid

How much salicylic acid is initially weighed out?

• 2.00 g

• 5.00 g

• 2.27 g

• 4.00 g

What is added to create an acidic environment for the reaction?

• Water

• Ethanol

• Sulfuric acid

• Acetic anhydride

What is the purpose of heating the mixture in a boiling water bath?

• To dissolve the reactants

• To speed up the reaction

• To evaporate excess water

• To cool the mixture

What is used to filter the aspirin crystals from the solution?

• A centrifuge

• A distillation apparatus

• A simple funnel

• A sidearm flask and suction filter

Why is ethanol used in the process?

• To dissolve impurities

• To rinse the crystals

• To heat the solution

• To cool the solution

What is the purpose of recrystallization in this experiment?

• To form larger crystals

• To increase the yield

• To change the color

• To purify the aspirin

What is the weight of the filter paper used in the final filtration?

• 60 mL

• 354 g

• 10 mL

• 2.27 g

What is the final step in the aspirin synthesis process?

• Cooling the solution

• Heating the solution

• Adding more sulfuric acid

• Drying the aspirin crystals

What does the close-up view of the crystals show?

• The purity of the crystals

• The color of the crystals

• The weight of the crystals

• The size and shape of the crystals