Aspirin Experiment

Decent Essays
Results and Discussion

Experiment 4a –
The aim of the experiment is to determine the amount of aspirin produced. 1.5 g of salicylic

acid is weighed and kept in a beaker, then 3ml of acetic anhydride followed by 10 drops of

concentrated phosphoric acid is added to the solution. The solution was stirred for an

additional 5 minutes. After heating the solution 25ml of water was added to it and was kept for

a while for it to cool down. After 5 minutes this solution was kept in a larger beaker

containing ice and water for another 10 minutes. Once the solid was crystallized, it was filtered

using a buchner funnel at the vacuum filtration setup followed by the addition of DI water for

approximately 20
…show more content…
However, the aspirin

was in a powdered form so, it was loaded into a thin capillary tube for determining the melting

point. The capillary tube is put in one of the slots in the melting point apparatus. A 75 volt of

energy was provided for the aspirin to melt. The energy was then slowly lowered to 65 volts

and thus the melting point of aspirin was obtained which came out to be 119 to 123 in Celsius.

Discussion -
The melting point of aspirin is 136 in Celsius as compared to the result found of 119 to 123 in

Celsius. It is different because there might be some impurities present in the aspirin formed so

it has disturbed the crystal lattice of aspirin.

Part 2 – Spectroscopic analysis.
0.239 g of aspirin is weighed in a beaker where 5 ml of 1.0M sodium hydroxide is added which

converts aspirin to salicylic acid. A transfer pipette is used to transfer 20ml of the solution to

100ml volumetric flask which is then rinsed with DI water. Furthermore, the concentration of

the synthesis product is calculated using the formula M1V1=M2V2 where M2 is the unknown

concentration.

Result –
M2 =

Related Documents

  • Great Essays

    Quantification of Iron in Whole Grain Cereal Jacob Rickman and Yasmeen Coan Submitted to: Curt Zanelotti CHEM 1045, Experiment No. 12, April 15, 2016 LABORATORY WRITTEN REPORT Honor Code Signature: _________________ Objective In this experiment, we gained an understanding of the relationship between chemistry and food products while developing and enhancing good lab techniques. We applied dilution concepts to carry out the experiment.…

    • 1251 Words
    • 6 Pages
    Great Essays
  • Improved Essays

    6.03 Calorimetry Lab

    • 512 Words
    • 3 Pages

    Let the solution cool for a few minutes (approximately till room temperature). 5. Add the mixture to the separatory funnel. -Make sure there was no leak. 5.…

    • 512 Words
    • 3 Pages
    Improved Essays
  • Improved Essays

    This process is carried out by the separation of compounds based on the difference in solubility. The steps to recrystallization can be described by the following • Choose an appropriate solvent based on the compound’s characteristics • Dissolve the compound in the minimum amount of solvent • Slowly cool the solution to form the crystals • Collect and wash the crystals utilizing a filtration set up • Dry the crystals through vacuum filtration and natural evaporation in the laboratory drawer The heating and cooling of the crude acetaminophen…

    • 617 Words
    • 3 Pages
    Improved Essays
  • Decent Essays

    Task 3 P1 When using thin layer chromatography (TLC) to test for purity of aspirin it is a quick and simple method. Firstly when using the TLC method you need to have a TLC sheet and mark on the sheet 0.5cm up on the sheet and draw a line, make sure you don’t press too hard on the paper as this will disrupt the absorbent on the paper. You need to make sure the samples have been marked on the paper so you don’t get mixed up and leave a gap between the aspirin samples so they don’t run together as this will give an inaccurate result. Next get a 1% concentrated sample of a known purity of salicylic acid as this is suitable for the TLC analysis, then obtain a small glass rod (micro capillary) and use this to dip in the solution and on to the paper in the position where the sample of aspirin is named.…

    • 408 Words
    • 2 Pages
    Decent Essays
  • Improved Essays

    Abstract: The objective of this experiment was to synthesize aspirin from salicylic acid and acetic anhydride. The general theory behind this experiment was to study the synthesis of a drug from organic materials. During the experiment, esterification had occurred between reactants salicylic acid and acetic anhydride. Then, phosphoric acid would catalyze the reaction and water would be added to decompose the remaining acetic anhydride. Through the process of filtration, aspirin crystals were collected and separate from the liquid acetic acid-water solution.…

    • 993 Words
    • 4 Pages
    Improved Essays
  • Decent Essays

    Gather all the materials and put them on the lab table. 2.Test the conductivity of the unknown solution with a conductivity tester and based on your knowledge of bonds write down the identity of the solution. 3.Pour the solution into a graduated cylinder and write down the volume of the solution. 4.Set up the apparatus shown above. 5.Mass an evaporating dish and a watch glass together.…

    • 211 Words
    • 1 Pages
    Decent Essays
  • Improved Essays

    Photosynthesis Lab Report

    • 524 Words
    • 3 Pages

    The procedure for Lab 5 contained four parts. For Part A, a clean, dry 100 mL beaker was obtained and filled with 60 mL of distilled water. Next, the beaker was placed on a ring stand with a thermometer attached to the ring stand to record the temperature of the water. After the thermometer had been in the water for two minutes, the temperature was recorded. Following the recording of the temperature, a 10 mL pipet and a bulb was used to pipet 10.00 mL of distilled water into a clean, dry, pre-weighted 50 mL beaker.…

    • 524 Words
    • 3 Pages
    Improved Essays
  • Improved Essays

    Research Instrument Multiple Choice Identify the choice that best completes the statement or answers the question. ____ 1. Which of these is true of an ice cube? A It is made of vibrating, closely packed tiny particles.…

    • 1260 Words
    • 6 Pages
    Improved Essays
  • Improved Essays

    Copper Created Lab Report

    • 1320 Words
    • 6 Pages

    Then no more than 9 mL of 3 M H2SO4 was added dropwise until the color changed. Then 5 mL of distilled water was added to the beaker and placed on the magnetic stir plate. In small increments no more than 300 mg of 20 mesh zinc was added until the solution was colorless. Then most of the liquid was decanted and 5 mL of 6 M HCl was added to react with the excess zinc. The remaining solids were then rinsed with distilled water.…

    • 1320 Words
    • 6 Pages
    Improved Essays
  • Improved Essays

    In this method, a solute is dissolved in a solvent at boiling point to increase solubility. The new solution is then cooled to get pure crystals of the solute. Using this technique of an unknown helps one get a pure substance which could be tested for melting point. In Figure A, the red arrows show the series of test the first unknown 64A, was put through to determine what type of substance it was.…

    • 762 Words
    • 4 Pages
    Improved Essays
  • Improved Essays

    B. Buffers. 1. Two solutions, A. being 1.0 x HCl, and B. being 0.10 M will be given, as well as buffer solution 1 M NaOH. 2. Have 25 mL of solution A. and B. in two separate beakers.…

    • 783 Words
    • 4 Pages
    Improved Essays
  • Improved Essays

    What is the effect of increasing amounts of apple cider vinegar on the mass of milk curds? Purpose The purpose of the experiment conducted was to observe the effects of increased amounts of acid on the mass of yielded milk curds. Background Information Curd formation, or coagulation, is the process in which milk the proteins in milk clump together in the presence of an acid.…

    • 741 Words
    • 3 Pages
    Improved Essays
  • Superior Essays

    The Thermodynamics of Potassium Nitrate Dissolving in Water Introduction: This experiment focuses on thermodynamics or the study of heat and molecular randomness. It helps illustrate how and why potassium nitrate (KNO3) dissolves in water. When it dissolves, it dissociates into potassium (K+) and nitrate (NO3-) ions. These ions can also recombine into solid potassium nitrate. This reaction can reach a state where concentrations of ions remain constant or Ksp; which stands for the equilibrium concentration for the solubility product.…

    • 1221 Words
    • 5 Pages
    Superior Essays
  • Decent Essays

    Dissolving Chips

    • 179 Words
    • 1 Pages

    Objective: Observing the reaction of dissolving tablets in different temperatures of water. Data: The cold water was 20℃, and the hot water was 60℃. It took exactly 2 minutes and 4 seconds for the tablet to dissolve in the cold water. It took 20 seconds for the tablet to dissolve in the hot water.…

    • 179 Words
    • 1 Pages
    Decent Essays
  • Improved Essays

    Phase 2 – Agarose Gel Electrophoresis 1. Obtain our four H, E, L, and P labeled micro tubes and place them on ice. 2. Set the micro pipet to 2.0 ul. 3. Transfer 2.0 ul blue dye to each of the four H, E, L, and P micro tubes.…

    • 765 Words
    • 4 Pages
    Improved Essays

Related Topics