Salicylic acid

Separation and Purification of the Components of an Analgesic Tablet. Cora Bruno, Lab Section E. Aspirin, Caffeine and Acetaminophen were separated from four analgesic tablets of Excedrin using extraction techniques. 5% wt/vol NaHCO3, 4M HCL, ethyl acetate and deionized water were used to separate the three active components. MgSO4 was used to dry each extraction. Aspirin was isolated using a hot water bath and weighed to determine the percent theoretical recovery and the actual percent recovery

stearic acid, sodium chloride, wax and salicylic acid, and observe them by testing the melting order, in addition to each of the substance’s conductivity and solubility. Using the information gathered from testing the melting, solubility and the conductivity of each of the substance, can help determine if the substance is ionic or covalent. To determine the melting order, a small amount of all the substance minus salicylic acid, were placed on a tray and placed on the hot plate. Stearic acid was the

made through a combination of salicylic acid and acetic anhydride. It is use to relieve mild to moderate pain such as muscle pain, headaches and common cold and reduce fever. The objective of this experiment was to synthesize aspirin from salicylic acid and acetic anhydride. The purity of aspirin was tested using the ferric chloride test and % yield was also calculated. Below drawing is the synthesis reaction of aspirin: PROCEDURE Preparations of Acetylsalicylic Acid (Aspirin) Prepare a hot water

“Acid/Base” lab’s purpose was to introduce extractions of one of the four neutral organic compounds (4-chlorobenzophene, biphenyl, trans-stilbene, and trans-chalcone). We then were asked to test the solubility of our selected neutral compound with hexane, water, methanol, and ethyl acetate to find the solvent that only dissolved the neutral compound while introduced to heat. Once the solvent was chosen, we purified the compound by recrystallization, and then concluded that my neutral organic compound

Oakland Schools Chemistry Resource Unit Intermolecular Forces  Brook R. Kirouac  David A. Consiglio, Jr.  Southfield‐Lathrup High School Southfield Public Schools    Bonding: Intermolecular Forces Content Statements: C2.2: Chemical Potential Energy Potential energy is stored whenever work must be done to change the distance between two objects. The attraction between the two objects may be gravitational, electrostatic, magnetic, or strong force. Chemical potential energy is the result

carboxylic acids are strong enough acids to react with strong bases, such as sodium hydroxide, to form salts. For example, OH Na+OH− O− Na+ + + H2O phenol sodium phenoxide O CH3 C OH ethanoic acid + Na+OH— CH3 C O + O− Na+ sodium ethanoate H2O Only with solutions of carboxylic acids is the concentration of H+(aq) ions great enough to give carbon dioxide when reacted with carbonates. (Note that the H3O+ ion is often written as H+(aq).) CO32–(aq) + 2H+(aq) → CO2(g) + H2O(l) So carboxylic acids make

Discussion: The focus of the first part of the experiment is extraction. By using liquid-liquid extraction, the acid, base and neutral component of an unknown compound should be isolatable. The unknown compound was in a 1:1:1 ratio of acid, base and neutral components. By dissolving it in 20mL of ethyl acetate, then adding it to a separatory funnel with 20mL of HCl, the HCl would be expected to react with the unknown base in the separatory funnel. Since HCl and the unknown base would be soluble,

Alka Seltzer Dissolving at Different Temperatures The variable that I will change will be the temperature of the water that the Alka Seltzer is put in. For my results I will measure the time taken for the Alka seltzer tablet to completely dissolve in water at different temperatures. Input variables: * Varying surface area of Alka-Seltzer tablet, i.e. if cut into smaller pieces or crushed it will increase the surface area. (If the surface area is increased (more powdered) the rate

Salicylic acid is an extract of willow bark, and Hippocrates, Galen, Pliny the Elder knew that this bark could ease pain and reduce fevers. Although Reverend Edward Stone was the one who noted that the willow bark was effective in reducing fever, due to the salicylic acid, back in 1763, it caused damage to the mucous membranes of the mouth and esophagus, which caused hemorrhaging of the stomach lining. It was a scientist at the Bayer Company in Germany that noted the salicylic acid contained a phenol

acetylsalicylic acid (aspirin), thus becoming familiar with synthetic chemistry tools and techniques. Introduction1 Organic molecules can be classified based on the functional groups that they possess. One of these classes is esters, which are produced from an acid and an alcohol as shown in the following figure. Figure 1: Reaction of a carboxylic acid and an alcohol to form and ester.2 Based on the above reaction, a wide variety of esters can be formed since there are so many acids and alcohols