identified. The reactant is a secondary alcohol therefore there would be no over-oxidization. The purity of the benzophenone by recrystallization will be analyzed using thin layer chromatography (TLC) analysis. Two TLCs is done in this experiment. The first TLC plate is just to monitor the progress of the reaction. The second TLC is to monitor the progress of the recrystallization. In the second part of the experiment‚ the goal is to determine which test tubes with unknown A and B contains glucose or sucrose
Premium Alcohol
CHEM 2510 Laboratory Report: Recrystallization and Melting Points Cover Page: Recrystallization and Melting Points by Lab Instructor: January 28‚ 2014 Purpose: The purpose of this experiment was to recrystallize a 95% pure sample of benzoic acid contaminated with approximately 5% salicylic acid using two different methods to determine the melting points and discover the impurities of the substance
Premium Water Carboxylic acid Salicylic acid
such as nail making‚ metal or steel sheets. This machine is categorized into two parts: hot rolling mill and cold rolling mill. If the temperature of the metal is above than its recrystallization temperature then it is termed as hot rolling process. If the temperature of the metal is below than its recrystallization temperature then it is termed as cool rolling process. In hot rolling mill‚ a large piece of metal is heated above their temperature and then deformed between rollers. Cold steel rolling
Premium
1:1 ratio. The theoretical yield is (9.99 x 10-3 x 151.17) about 1.51g of paracetamol which is the amount that should be received. The actual yield at the end was 1.05g which is ≈ 70 % (69.54 %) (1.05/1.51 x 100) of the theoretical amount. Recrystallization was performed to purify the compound received. The crystals of compound A were filtered out using filter paper. Doing a recrystalization purifies the substance but also decreases the yield as material is lost due to the finite solubility of paracetamol
Premium Oxygen Thin layer chromatography Ethanol
finished‚ resulting in the existence of the finest grain structure. Owing to the relatively lower temperature‚ the ferrite and pearlite‚ which are represented by the white and dark areas respectively are both much finer. This shows complete recrystallization. * the transition zone is the region where
Premium Metallurgy Welding Heat
Yield Data The reaction of 0.139 grams of trans-cinnamic acid‚ 0.8 mL of glacial acetic acid‚ and 1.0 mL of 1.0 M of Bromine in acetic acid was recrystallized to form a solid‚ clear‚ crystal- like product. The melting was taken from the recrystallized product to determine what had been obtained. The melting point was found to be 130.5°C-133.7°C. Concluding that the product formed from the addition of bromine was a mixture of the erythro-2‚ 3-dibromo-3-phenylpropanoic acid‚ which has a known melting
Premium Water Solid Liquid
the reflux is complete‚ sulphuric acid will be added to the refluxed solution‚ which will cause the salicylic acid to precipitate. This will then be filtered through suction filtration. Once the product has dried‚ purification must be done by recrystallization; dissolving the product in a minimum amount of hot solvent (water)‚ and then filtering once again through suction filtration. Finally‚ to complete the main purpose of the experiment‚ which is to compare the prepared product with a standard (salicylic
Premium Salicylic acid Distillation Chemistry
I. INTRODUCTION Synthesis Acetylsalicylic acid is an acetyl derivative of salicylic acid which appears as a white and crystalline and a weakly acidic substance with a melting point of 135°C and is also known to be aspirin. It is one of the most widely used drugs that can lower fever and is used as a painkiller. According to (Escobel‚ 2011)‚ Aspirin is synthesized through the reaction of salicylic acid with acetyl anhydride that causes a chemical reaction that turns salicylic acid’s hydroxyl group
Premium Aspirin Salicylic acid Acetic acid
mixing and then allow to sit still for 15 minutes. we then added the product in a beaker than contain 10 grams of ice. We then vacuum filter the product and wash the crystals with cold water and cold methanol. We then began the recrystallization process. During the recrystallization process‚ the product was a white chucky large crystals‚ when the boiling methanol was added there was a color change from white to yellow. The color change was due to the conversion of aromatic properties. We then place solution
Premium Benzene Chemistry Sulfuric acid
Over 40% of medicinal chemicals in the world were developed from isolation of the natural source. These sources were from fungi‚ plants‚ bacteria‚ animals‚ etc. The techniques used to isolate and purify has been by extraction‚ distillation‚ recrystallization‚ and chromatography. In this experiment we will be trying to obtain a pure organic compound from a natural source. Because this natural source it is not only trimyristin and myristic acid that makes it up‚ it’s a mixture of many compounds. Although
Premium Chemistry Chemical substance Chemical compound