Acetylation Lab Summary Two versions of the same experiment were performed to assess the difference in reactivity of certain amines with acetic anhydride. Throughout both experiments, observations were made about the reaction progress. The starting materials and products were characterized using thin layer chromatography (TLC), infrared spectroscopy (IR), and melting point. During the first week, I dissolved 0.512g of aniline in 8.5mL of water, and added 5.5mL of 1M HLC.
Abstract: The purpose of this experiment was to identify given Unknown White Compound by conducting various test and learning how to use lab techniques. Tests that are used during this experiment were a flame test, ion test, pH test, and conductivity test. The results drawn from these tests confirmed the identity of the Unknown White Compound to be sodium acetate (NaC2H3O2) because there were no presence of ions and sodium has a strong persistent orange color. The compound then will be synthesized with the compounds Na2CO3 and HC2H3O2 to find percent yield.
Flucloxacillin: - It is a member of the penicillin family that is used as an antibiotic for the staphylococcal infection (bacterial infection) that affects the human tissues of the skin and the lungs (pneumonia). It is also used in the treatment of food (rotten food) and poisoning of theblood. Staphylococcus may also be a risk to the human life if it releases its toxins by some strains of the bacteria to cause toxic shock. - Flucloxacillin is prescribed mainly in Australia & Europe, as it is very effective against the staphylococcus bacteria by inhibiting the synthesis of its cell wall then it will die. - Flucloxacillin is a ß-lactam antibiotic with a narrow spectrum.
X.Huang et al. studied gas-phase hydrogenolysis of methyl formate at atmospheric pressure over two type copper based catalyst, copper chromite and skeletal copper. The product where analyzed by GCs with TCD, Porapack Q column and CTR-1. Before use the catalyst was reduced, the skeletal catalyst was heated to 483 K with H2 flown over for 1-2hour, while the copper chromite catalyst was heated to 513 K with H2 flown over for 4 hour. For the experiment the amount of catalyst was around 0,5g skeletal copper and 0,15 g copper chromite. In the experiment there was always stoichiometric or excess of H2 to methyl formate.
The purpose of this experiment was to synthesize a Grignard reagent with 1-bromobutane and homogenized magnesium in anhydrous diethyl ether. This solution was refluxed in a flask connected to condenser and drying tube. As seen in the mechanism, maintaining a dry condition is important to avoid the Grignard reagent from attacking water, which will result in loss of the bromine. It is important to reduce the amount of moisture and water vapors to avoid destroying the Grignard reagent, which is essential to the synthesis of 2-methylhexanol.
The Disappearing Spoon by Sam Kean provides a flashback to when humans first began using chemical warfare. The use of chemical warfare can be traced back to Ancient Greece. Kean talks about the Spartan’s attempts at surprising the Athenians with a stink bomb. Though it had failed, it marked the start of chemical warfare. Twenty-four hundred years later, chemical warfare still has little strategic value until World War I.
Catalytic reduction of p-nitrophenol As a model reaction, we selected the reduction of 4-NP by NaBH4 to 4-AP. The reduction was followed with the aqueous solution in a standard quartz cell with a 1cm path length. The reaction process was as follows: 1.5 mL of 0.15 mM 4-NP was mixed with 1.0 mL of 0.02 M NaBH4 in the cell for UV-Vis measurements. Immediately, the colour change was observed from light yellow to deep yellow. 0.5 mL of AuNPs solution was added to the above mixture. The UV-Vis spectra were recorded with a time interval of 1 min in a scanning range of 200-600nm at ambient temperature (25±20C).
3.1 ABSTRACT The intermolecular interactions in the N-methylformamide with acetophenone, cyclic ketones (cyclopentanone and cyclohexanone) binary liquid systems are studied in combined experimental and computational methodology. The speed of sound (u), density (ρ) and viscosity ( ) values are measured for binary mixtures of N-methylformamide with ketones over the entire range of mole fraction at temperatures T= (303.15 to 318.15) K, at atmospheric pressure. From the experimental results, the values of excess molar volume ( ), excess isentropic compressibility (κsE), deviation in viscosity (η) and excess Gibbs free energy of activation of viscous flow ( ) are evaluated. The experimental results indicate the intermolecular association between the binary liquid
I. Title: Mass and Mole Relationships in a Chemical Reaction II. Background: Percent yield is the ratio of actual yield to theoretical yield. Amount in percent of one product formed in chemical reaction. Actual yield is the information found is experiments or is given.
The condensation product between the aromatic aldehydes and the aromatic ketones are 1,3-diphenylprop-2-en-1-ones, which are commonly known as chalcones. If any other types of aldehydes and ketones are used, the product is frequently known as α,β-unsaturated ketones. Chalcones and α,β-unsaturated ketones have been captivating, the medicinal, synthetic, and applied chemists by virtue of their structural units (Figure 1) which have been gained many access to tailor the molecule suitably for wide range of applications in medicinal, synthetic, and applied chemistry. The fluorine has the special topic of interest among the chemists as its introduction into the organic molecules leads to a dramatic changes in their physical and chemical properties. The recent activities show a remarkable growth in fluorine chemistry as the chemists practiced to do polishing the organic molecules with fluorine to improve their properties, leading to widespread applications in medicinal,[4b,c,5] agrochemicals,