The purpose of this experiment was to study the purification of an unknown solution through the process of recrystallization. Recrystallization is a process of the solid organic compound being purified, and impurities soluble at high temperature to form crystals. The identification of an unknown compound was determined through the process of recrystallization. The use of solvent determines the recrystallization process, so the selection of an appropriate solvent is vital for this process since the
In this experiment, different properties of stereoisomers, specifically enantiomers and diastereomers, were analyzed. R-Carvone and S-Carvone, which are enantiomers, were analyzed for opposite plane polarization and different odor. An isomerization was performed on dimethyl maleate to convert it into dimethyl fumarate, a diastereomer. Isomers are compounds with the same empirical formula, but with different arrangements of the elements. Enantiomers, a type of isomer, are two compounds that are chemically
Introduction: The melting point of a pure substance is a characteristic that is physically consistent with each specific substance. When a substance is impure, it causes the melting point to decrease and the range of the melting point to increase. In order to identify a pure substance, it must be purified in order to get an accurate melting point estimation. Purification can be done through crystallization. Crystallization is one of the simplest and most effecting ways to purify a solid. The procedure
-Explanation/Interpretations- When we added 35ml of 10% aqueous hydroxide acid into 2 Erlenmeyer flasks (Experiment 1), the certain change was shown only in the first flask, which indicated that almost benzoic acid was drawn at first. Raw product weight, which was obtained from the experiment 1, was changed slightly when we checked it 1 week after first experiment. I have thought that during 1 week, because we kept the product in the bottle, there would be any change or absorption of something there
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
Bromination is a type of electrophilic aromatic substitution reaction where one hydrogen atom of benzene or benzene derivative is replaced by bromine due to an electrophilic attack on the benzene ring. The purpose of this experiment is to undergo bromination reaction of acetanilide and aniline to form 4-bromoacetanilide and 2,4,6-tribromoaniline respectively. Since -NHCOCH3 of acetanilide and -NH2 of aniline are electron donating groups, they are ortho/para directors due to resonance stabilized
Aim This experiment separates the constituents of a commercial headache powder employing the use of extraction method. The active ingredients of the commercial headache powder were extracted by dissolving the powdered tablet in propanone solvent. The suspended fine particle binders in the propanone solution were removed by filtration method. The solid analgesia was obtained by evaporating propanone solvent. It was then collected on Hirsh funnel by filtration. Melting point determination was performed
solution as a solvent. This method will allow the separation of impurities. We will analyze Benzoic Acid as it is dissolved and recrystallized in water and in a solvent of Methanol and water. Reaction/Summary In Experiment One we will be recrystallizing Benzoic Acid from water. In Experiment Two we will be recrystallizing Benzoic Acid using a solvent pair made up of Methanol and Water. The Seven step process of recrystallization consists of adding a solid organic substance into a solvent, then dissolving
The purpose of this experiment was to learn about the electrophilic aromatic substitution reactions that take place on benzene, and how the presence of substituents in the ring affect the orientation of the incoming electrophile. Using acetanilide, as the starting material, glacial acetic acid, sulfuric acid, and nitric acid were mixed and stirred to produce p-nitroacetanilide. In a 125 mL Erlenmeyer flask, 3.305 g of acetanilide were allowed to mix with 5.0 mL of glacial acetic acid. This mixture
Experiment 2 Report Scaffold (Substitution Reactions, Purification, and Identification) Purpose/Introduction 1. A Sn2 reaction was conducted; this involved benzyl bromide, sodium hydroxide, an unknown compound and ethanol through reflux technique, mel-temp recordings, recrystallization, and analysis of TLC plates. 2. There was one unknown compound in the reaction that was later discovered after a series of techniques described above. 3. To purify and identify the product, recrystallization is used