Vacuum flask

This paper describes the process by which a three-component mixture was separated and identified. The mixture was separated with the aid of a separatory funnel and various solvents acids and bases. The compound was found to be comprised of meta-nitroaniline, naphthalene, and benzoic acid / 2-napthol. All three of them are organic compounds with melting points in the order they were listed 111-114, 79-82 and 121-122/121-123 °C. the percent yield of each component was also calculated at the end…

that was used during the steam bath could have had some of the product on it which would have been removed with the stick. It is less clear why the benzoic acid was overproduced. Some of the organic layer may have been drawn off with it, but the vacuum filtration should have left only the benzoic acid. There could have been an error in weighing the filter paper before the procedure. There also could have been contaminants in the basic extract, causing more than just the benzoic acid to be…

extraction. In this experiment, 7 ml of the mixture was used instead of 10 ml. A portion of this mixture was transferred to another flask to facilitate cooling. Afterwards, 3.5 ml of 12 M hydrochloric acid was added gradually to the mixture. A sample was obtained at a melting point of 1250C, and another at 750C. A sample of this mixture was then transferred to a 50 ml volumetric flask. Finally, a crystal was formed and the melting point of the sample was obtained as 62 0C. A Flowchart…

were added to the mixture at that moment to remove the water during the reaction. The reaction temperatures were held constant within a range of ±1°C. A mixture of HYOODA 3 (5 g; 0.01 mol), oleyl alcohol (OL) (10 g; 0.02 mol) in a 250-mL three-neck flask equipped with a cooler, dropping funnel and thermometer was heated for 1 h at 90 °C. During the 1 h reaction SG was put in the oven at 180 °C for drying. After 1 h SG drying the SG (50% of the HYOODA) and SA (3.5 g: 0.007 mol) were added to the…

Abstract The Purpose of experiment is to introduce the technique of crystallization, by following methods to purify the antibiotic sulfanilamide away from acetanilide. From the laboratory experiment, 0.51 g of impure sulfanilamide was at first measured and experienced in the crystallization procedure. Because of different steps of the experiment, the last mass of the crystal was 0.22g. This demonstrates the procedure decreased the underlying mass by 0.28g which mean the 43.13% recovery using…

of vanillin and 15ml of ethyl acetate was prepared in a 50 mL conical flask. The mixture was mixed and a magnetic stirrer was added to the mixture. The mixture was then stirred on a hot plate for 5 minutes at room temperature. After mixing, the boric oxide/acetylacetone mixture was then added to the tributyl borate mixture using a spatula. The reaction mixture was stirred for 5 minutes to ensure all solids in the conical flask have been dissolved. After which, one drop of butylamine…

Experiment 1 and 2 Recrystallization: Purification of Solids and Melting points Purpose: In the fist experiment, impure Vanillin was purified through the process of recrystallization. Desired solutes were recovered through the technique of vacuum filtration, and then dried to take percent recovery In the second experiment, a percent recovery of the recrystallized Vanillin from the first experiment was performed. The percent recovery of Vanillin was 77.18% A mixed…

caffeine was isolated we used thin layer chromatography (TLC) to compare the extracted material to a standard solution of pure caffeine. We dissolved the sublimed caffeine in 3 mL of methylene chloride in a clean vial and then swirl the residue in the flask with 3 mL of methylene chloride. A pure caffeine solution sample was obtained. On a chromatographic plate, two lines were drawn 0.5 cm away from the short ends. Then place one drop of the caffeine solution on the line and next to it one…

PEG-RAFT agent The synthesis of the macro PEG -RAFT agent, Chain Transfer Agent (CTA), was performed by esterification method. Briefly, RAFT agent (0.4 g, 1.5 mmol) and dihydroxyl PEG (2g, 0.5 mmol) were dissolved in 35 mL of DCM in a 250 mL round bottom flask equipped with a magnetic stirrer. Then, it was placed in an ice bath (0 ºC); Next, DCC (0.25 g, 1.2 mmol) and DMAP (0.015 g, 0.12 mmol) were added. After 30 min of stirring at 0 °C, the reaction temperature is elevated to room temperature.…

The filter paper traps the solid while a vacuum draws the liquid through the funnel into the flask. These methods aid in the synthesis of the artificial kidney stones in order to determine the kidney stones solubility. Methods: The three most common kidney stones, such as Calcium Oxalate (CaCl2 and Na2C2O4), Calcium Phosphate…