Acetic anhydride

The purpose of the experiment was about recrystallization of crude ASA from crude ASA, then analyze the yield and melting point of Recrystallized product, test for Purity of Recrystallized ASA by using thin layer chromatography and analysis of Recrystallized Acetylsalicylic Acid by Spectroscopy to compare these results with another experiment about creating an Aspirin from Salicylic Acid. In this experiment, 0.1241 gram of Recrystallized ASA was produced from 1.1754 gram of Crude ASA and the…

The objective of this experiment is to prepare isopentyl acetate by direct esterification of acetic acid and isopentyl alcohol. Esterification is carried out by utilizing organic chemistry techniques, such as heating under reflux, extraction, and simple distillation. The acid and alcohol would be combined and heated under reflux; which heats/speeds up the reaction without having the reactants/products evaporate or explode. During reflux, the heating and condensing of the vapor prevents any loss…

Purpose The purpose of the experiment Thin Layer Chromatography was to analyze compounds, Aspirin, a mixture of Tylenol with ethanol, acetaminophen, a mixture of Excedrin with ethanol, Aspirin, and acetaminophen, Anthracene, Benzyl, and Triphenylmethanol by separating them with the help of silica plates. Procedure Three silica plates were taken and on the plastic side, they were all marked 1 cm above its end using a pencil. With the help of capillary tube, the first and the second plates were…

In the experiment, a Fischer Esterification reaction took place in order to convert a carboxylic acid into an ester. As a result of this reaction, the alcohol (-OH) of the original carboxylic acid, Benzoic Acid, will be replaced with the –OCH3 group attached to the original alcohol, methanol. This would then generate the ester, Methyl Benzoate. An ester is a derivative of a carboxylic acid that can be formed in multiple ways. The most straightforward approach to producing and ester involves the…

The purpose of this lab was to determine how different solvents affect the solubility of sugar. In this experiment 2 grams of sugar was mixed into 50 ml of rubbing alcohol, water and vegetable oil. It was hypothesized that the rubbing alcohol would dissolve the sugar the best followed by the water, and the vegetable oil would fail to dissolve the sugar. It was found out that both the rubbing alcohol and the vegetable oil were not able to dissolve the sugar. The water however, was able to…

different activation times. The decrease in riboflavin over time makes sense as the bacteria and archaea in the media use the vitamin as a cofactor in the digestion of cellulose as well as with other sugars and fats. (2) The The LOD and LOQ of the acetic acid solution were well below the concentration standards used for riboflavin, though the LOQ was close to the riboflavin values when the media was run on its own. With the standard addition, however, the majority of the riboflavin…

Prep: In order for the experiment to be conducted, there needed to be an extract available in order to soak the 7 mm disc. The way that the spices were extracted was by taking both the fresh and dry spices (Zingiber officinale (Ginger), Thymus vulgaris (Thyme), Allium sativum (Garlic), and A. cepa (Onion)) and measured out 1.5 grams of each of the spices. For the fresh spices, they had to be chopped up finely in order to get an exact measurement of 1.5 grams like the dry spices and this also…

When solving for the percent of acetic acid present in vinegar the end result of 3.57% was not far off from the standard 4%. The small error could be a result of error in experiment or an actual failure of the acid to meet the federal standard. An example of error in experimentation is…

Bromination of trans-cinnamic acid Purpose and Introduction The halogenation of of trans-cinnamic acid using pyridinium tribromide was connected in the organic solvent glacial acetic acid in order to verify and test which addition mechanism the reaction would follow. In the anti-addition mechanism, bromines attach themselves on opposite sides of the alkene functional group in a compound. In a syn-addition, the attach to the same side of the alkene. The reaction synthesis was completed by using a…

order to synthesize isopentyl acetate. This type of esterfication involves the reaction between a carboxylic acid and an alcohol in the presence of an acid catalyst. The esterfication mechanism in this experiment involves the reaction between glacial acetic acid and isopentyl alcohol with sulfuric acid…