Upon completion of the lab, analysis, and calculations, it is evident that t… The methods used included recrystallization and scratching to produce a precipitate, which was then filtered to remove any excess moisture. Reactions: Procedure and Results: Aspirin Synthesis Tap water was heated on a steam bath in a 250 mL beaker. The main objective of the synthesis of aspirin lab was so produce aspirin (acetylsalicylic acid) through the reaction of salicylic acid and acetic anhydride. Aspirin is an organic ester. RELATED WORK: Synthesis of Aspirin Lab Report . Synthesis of Aspirin By: Jon Torre Purpose: To determine which of four catalysts yields the fastest reaction rate in the acetylation of salicylic acid (1) to form acetylsalicylic acid (2).

An ester is a compound that is formed when an acid reacts with an alcohol, -OH group.

The reaction, using molecular formulas is C7H6O3 + C4H6O3 - … Therefore, the theoretical yield of acetylsalicylic acid is 0.014 moles. ment (synthesis of aspirin masses, theoretical yield, percent yield and error, and TLC analysis). The temperature of an alcohol thermometer was equilibrated in a beaker of room temperature tap water.

For the synthesis of aspirin, how do you calculate the percent yield if the reaction produces 4.70 grams of aspirin.

Introduction: The purpose of this experiment was to make aspirin via esterification, and to determine the percent yield we as a lab group made.

Preparation of Aspirin Lab Report.

After synthesis and analysis, it will be deter-mined if the crude and recrystallized samples were composed solely of either salicylic acid, acetylsalicylic acid, or a combination of both (3). Theoretical Yield (Eq.4) 2.0 g salicylic acid (1 mole/138.0 g) = 0.014 moles 5 mL acetic anhydride (1.08 g/mL) = 5.4 g 5.4 g (1 mole/102 g) = 0.05 moles There is a smaller molar amount of salicylic acid so it is the limiting reagent. The results displayed a percent yield of 34.3%, from a theoretical yield of about 1.97g of aspirin and an actual yield of approximately 0.68g of aspirin.