Distillation

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…

Set 2 A pressure vs. Volume analysis was done to determine the bubble points for Oil A, Oil B and water, with CO2 Oil A Represented in Fig. 7 below, the Pressure vs. Volume behavior of Oil A is displayed, the graph is separated into two different sections as Oil A transitions from a single phase fluid to a two phase fluid, the transition occurs at 800 psi which represents the bubble point for Oil A. Fig XX. Pressure vs. Volume Oil A Analysis was done on the relationship between…

1-[Cyano(4-methoxyphenyl)methyl]cycloalkanol (VF-I) synthesized through the reaction of p-methoxyphenylacetonitrile and cyclohexanone using aq. NaOH and tetrabutylammonium hydrogen sulfate as PTC. NaBH4 and CoCl2 in 2:1 THF: H2O used for the reduction of VF-I to obtain 1-(2-amino-1-(4-methoxyphenyl)ethyl)cyclohexanol (VF-II). Further, venlafaxine derivative of the amino acid -carboxamide (VFCA-I toVII ) synthesized through coupling of N-Phthaloyl amino acid chloride derivative (2a-2g-…

The instrumentation of a HPLC apparatus is as shown in the diagram above. A HPLC apparatus is including a solvent reservoir, degasser, pump, injector, HPLC column, detector and data collection device. Solvent reservoir The solvent reservoir is usually a glassware or reagent bottle which contained the analytic sample. It is located at the upper part of the HPLC. It is also known as mobile phase reservoir since the sample will be moved. The flowing of the sample is depends on gravitational…

Objective: In this laboratory experiment three objectives were sought after. These objectives were to first, create a separation scheme. Second, perform basic biochemical qualitative analytical tests. Lastly, identify the major components of milk. Introduction: The three goals in this experiment were desirable due to the fact that it gave knowledge on what is actually digested when milk is consumed. This is notably important to the children and adults that are lactose intolerant. 1 Many…

-SiO2@ON/glass was coated with poly(methyl methacrylate) (950 PMMA C4, Micro Chem, 2 mL) by spin coating (500 rpm for 5 s, 1,000 rpm for 5 s, 2,000 rpm for 5 s, 1,000 rpm for 5 s, SP-7200GT spin coater, Intec systems). The plate was cut into 4 pieces of 1.5 × 2.5 cm2 area (Refer to Figure S3), and then added to 5% HF solution (100 mL). In the first 1 min, the glass plate was detached from S-SiO2@ON/glass and removed. The S-SiO2@ON was further etched for 2 h. Caution: HF solution is extremely…

From the data given in Table 1, there are a total of four mixtures present in the whole activity. This is because the main mixture which is the salt, sand, chalk, and water mixture can’t be separated using only one separation technique; it should be separated by parts. First, a filter paper was used to separate the salt and water from the chalk and sand. is the filtration process, a separation technique using a filter paper to separate solid particles in a liquid. Second, acid dissolution, using…

The formation of benzilic acid results from the reaction of benzil with ethanol and potassium benzilate. In order to produce benzil, benzoin was reacted with nitric acid. A crude product of benzil was produced from the reaction of benzoin and nitric acid. Through the process of multi-step synthesis, benzil was produced through the oxidation of an alpha-hydroxyketone to an alpha-diketone using nitric acid. Prior to the reaction of nitric acid and benzoin, nitric acid was protonated to form an…

Tara Ghaemi 9/16/16 Chao Li 232 Recrystallization of Acetanilide Introduction In this experiment, acetanilide will be purified to remove its two impurities by utilizing dissolution, hot vacuum filtration, and recrystallization. Hot vacuum filtration is performed to separate the crystal from the solution that it is present in. Hot vacuum filtration works best for this experiment because it prevents the premature crystallization of the solute, and thus lets the extracted crystal be extremely…

In lab, a sample of crude caffeine was purified using the technique of sublimation. Thin layer chromatography (TLC) was used to verify the caffeine's chemical structure and purity. Sublimation played a huge role in the purification of the crude caffeine. The process of sublimation is to take a chemical and change it from a solid phase directly into a vapor. Another reason as to why sublimation was used is because the caffeine can be separated from its contaminant due to the fact that it does…