Acetylsalicylic Acid Synthesis Lab Report

Lab Report 5: Acetylsalicylic Acid (Aspirin) Synthesis

Name: Divya Mehta
Student #: 139006548
Date Conducted: November 19th 2014
Date Submitted: November 26th 2014
Partner’s Name: Kirsten Matthews
Lab Section: Wednesday 2:30 L9
IAs Name: Brittany Doerr

Procedure:
For the procedure, see lab manual (CH110 Lab Manual, Fall 2014) pages 96-98.
Wilfrid Laurier University Chemistry Department. Fall 2014. Acetylsalicylic Acid (Aspirin) Synthesis. Pages 96-98 in Chemistry 110 Lab Manual. Wilfrid Laurier University, ON, Canada.

Abstract:

The purpose of this experiment was to determine the level of purity by using the values for melting point and absorbance and chemically synthesizing aspirin by using phosphoric acid as a catalyst. Pure ASA crystals are isolated from the solution with a Hirsch Funnel that was used with a filter. The melting point of the pure ASA crystals were calculated in order to calculate of absorbance. Iron (III) salicylate dianion must contain the acidified solution Fe3+ in order to measure the absorbance values. The level of the impurity can

Results:
Table 1: Results from the Salicylic acid (g) and the Purity of ASA (g) Experiment
Mass of salicylic acid (g) 0.14 g
Mass of filter paper (g) 0.47 g
Mass of “impure” ASA + filter paper (g) 0.56 g
Mass of prepared “impure” ASA (g)

The powder on the filter paper could've fell and this caused it to have a smaller percent purity, percent yield and also cause a lower absorbance and concentration of pure ASA. Another error would be not using a properly dried sample for the pure ASA in part C when making the crystals, this could have cause tye percent yield error. This would make a lower melting point. To prevent this from occurring next time there could be a dry sample that is completely dry and this would not alter the mass of the sample and this would make the solution have a more