Abstract: The goal of this experiment was to synthesize aspirin. In this experiment aspirin‚ also known as acetylsalicylic acid‚ was synthesized from salicylic acid and acetic anhydride. In the reaction the hydroxyl group on the benzene ring in salicylic acid reacted with acetic anhydride to form an ester functional group. This method of forming acetylsalicylic acid is an esterification reaction. Since this esterification reaction is not spontaneous‚ sulfuric acid was used as a catalyst to initiate
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produced from the reaction between the 1.0 M hydrochloric acid and the calcium carbonate from a reaction chamber into a flask containing water. This experiment will be performed by placing about 3.0 grams of calcium carbonate chips into a flask containing 35 mL of 1.0 M hydrochloric acid at one of the targeted temperatures. This flask is called the reaction chamber because it is the flask that contains the actual occurring reaction. The reaction between calcium carbonate and hydrochloric acid creates carbon
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same time‚ the flask was warmed on a sand bath in order to dissolve the solid. Then it was allowed to slowly cool to room temperature and placed into an ice bath for 10 minutes. The crystals were collected by vacuum filtration and were allowed to dry. * Analysis: After the crystals were dry the solid was weighed and then the melting point was determined using a Melt-Temp machine. * Results: Lab Components | Mass (g) | Volume (mL) | Nutmeg | 1.00g | -- | Flask and Testube | 83
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was added to each flask. Using 10 mL and 25 mL graduated cylinders‚ the following volumes of CaCl2 solution with a concentration of 22 g/L was added to the Erlenmeyer flasks. In flask 1‚ 5 mL of CaCl2 solution was added. In flask 2‚ 15 mL of CaCl2 solution was added. In flask 3‚ 25 mL of CaCl2 solution was added. In flask 4‚ 35mL of CaCl2 solution was added. In flask 5‚ 40mL of CaCl2 was added. The mixture was stirred into each flask. The observations about the reaction in each flask was recorded in
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is added to an Erlenmeyer flask. An indicator is added
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experiment we shall use a 125-mL Erlenmeyer flask in place of the glass bulb used by Dumas. A small sample of an unknown volatile liquid will be placed in the flask and the liquid vaporized by immersing the flask in a hot water bath. A piece of aluminum foil will be used to seal the flask and a tiny pinhole made in the foil to allow excess vapor to escape. The temperature of the gas will be determined by measuring the temperature of the water bath surrounding the flask and assuming that the gas and
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Examining the Effects of Mass and Type Of Sugar on Yeast Fermentation Lab Purpose: To measure and analyze the effects of various types and masses of sugar in an ethanol fermentation reaction with yeast. Introduction: Ethanol fermentation is a system in which hydrogen ions from NADH + H + are broken down in order to release the trapped energy and regenerate NAD+. In the absence of a mitochondria or oxygen ethanol is formed‚ which is typically found in bacteria and some yeast. Yeast
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volumetric flask will be calibrated. Apparatus: Procedure and Equipment: The following equipment is required to complete the lab: One 50.00 mL Buret One 10.00 mL Volumetric Pipet Scale (preferably stainless steel) Pipettes 125 mL Erlenmeyer Flask Safety goggles and glasses Pen and Notebook Distilled Water The following procedure must be entertained in order to complete the lab: Calibration of a 10 mL Volumetric Pipet 1). Weigh a 50 mL Erlenmeyer flask. Make sure
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distinctive odor. It is found in bananas‚ as well as many other organisms. This experiment attempts to produce isopentyl acetate by heating under reflux‚ which involves heating the mixture in a flask with a condenser placed vertically in the neck since any escaping vapours condense and run back into the flask‚ by combining isopentyl alcohol with acetic acid and an acid catalyst. The product was isolated using a combination of techniques -- acid-base extraction‚ drying‚ and distillation -- and was characterized
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Placing the 125ml Erlenmeyer flask underneath‚ and starting to titrate‚ until the pink color of phenolphthalein just disappeared‚ in which the end-point was reached‚ and the final reading of the burette was recorded. Putting the 250ml Erlenmeyer flask back on to the magnetic stirrer with a stir bar inside and turn on both heat and its stirring function. A digital thermometer was put
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