Vacuum flask

The purpose of experiment 02 is to separate two solid compounds, benzanilide and thiourea, from a crude mixture, then verify the purification. The experiment is to be broken down into several stages: (a) In order to perform small-scale recrystallization, a suitable solvent must be selected. (b) The actual small-scale recrystallization is performed on the benzanilide-thiourea crude mixture. (c) Filtration of purified crystals. (d)Product recovery is calculated and measured. (e) In order to…

sublimation of the final product. Improvements to the experiment include adding additional extractions to ensure that all of the product had been removed. Another improvement would be to ensure that the vacuum was properly sealed for the vacuum process so that any vapors present would need escape the flask and reduce the percent yield of the Norborene. Lastly, once the ether is about half way evaporated, to turn the vial on its side to create a greater surface area of the ether in order to…

1.32 g of isoborneol was mixed with 1.00 mL of glacial acetic acid. The solution was heated to 50° C while 1.70 mL of NaOCl added. Then 15.0 mL of NaOCl was measured into a separatory funnel and added dropwise to the solution for 10 minutes. The flask was sealed while heating and stirring continued. NaOCl in the solution was tested every five minutes using starch-iodide paper for 30 minutes. After 10 minutes, 2.0 mL of NaOCl was added. A total of 6.0 mL of NaOCl was added over a 20 minute period…

molecular weight 102.1g/mol and density 1.08g/mL, and 5 drops of concentrated sulfuric acid were mixed in a 125mL flask. The mixture was heated in a 70°C hot water bath then taken out to cool to room temperature. Once the formation of crystals was complete 50mL of water was added and pured over a Buchner funnel for vacuum filtration. The crystals were rinsed with cold water and stayed on the vacuum for 5-10 minutes.The crystals were removed and weighed. The esterification process yielded 2.51g.…

The neutralization of the reaction was verified using pH paper to test whether the pH was neutral or slightly basic. At this point, the two possible products in the round bottom flask could have been exo- and endo-norborneol. Extraction and washing was performed and the exo- and endo-norborneol products formed were extracted into dichloromethane due to their similar solubilities, where the two products are overwhelmingly non-polar…

acid. Lastly, we preformed a precipitate test to confirm that the molar mass of K2SO4 is 174g. We weighed .5 grams of K2SO4 and dissolved it into 15 mL of H2O. We combined that with 10 mL of BaCl2 solution. We filtered out the precipitate using a flask, cone, and filter paper. We then measured the mass of the precipitate to be .597 g. We then used equations to solve for the molar…

QUADERA software was used for data acquisition and control. The setup involves placing the gas analyzer capillary at one of the outputs of a booth-necked quartz flask containing solution of the metallocorrole. The output was free to perform water additions, using a micro syringe, through a septum closure. The gas detector was connected to the photocatalytic system as shown in Figure…

The contents of the flask were stirred for a period of 15 min, and then the solution was heated to 40 , 0.5 mol p-methylcyclohexanone was introduced drop wise to the solution for about 3 h. Then the mixture was poured into 60 mL boiling water containing 2N potassium hydroxide…

The flask labeled “hexane” is filled with approximately 25 ml of hexane, and the one labeled “organic solvent” is placed under the column in order to collect the hexane. 10. Use a pipet to slowly add 1ml of hexane in increments to avoid any overflowing. 11. Keep adding and collecting the hexane until the yellow ferrocene reaches the bottom of the column bed, and immediately start to collect it in the sample vial labeled “F” 12. After all of the ferrocene has been collected, place the flask…

Molecules Project 1: Chemiluminescence Luuk Adema & Ewout van der Veer S2794640 & S2680254 luukadema@hotmail.com & ewoutvanderveer@msn.com 31-10-14 F. Mecozzi, E. Hagting & M. van Zuylen Abstract Luminol was synthesized and the light intensity of its luminescence was tested. The yield of the synthesis was 55%. Measurements of the intensity of luminescence were done under standard and optimal conditions resulting in peak intensities of ±0.02 lux (standard) and ±0.03 lux (optimal). It has been…