the cold water bath and the temperature of the boiling water bath and cold water bath. Materials: Safety goggles‚ Lab coat‚ protective rubber gloves‚ notebook for observations‚ pen or pencil‚ four trays‚ 3 grams of salicylic acid‚ 125 mL Erlenmeyer flask‚ 8 mL of acetic anhydride‚ 8 drops of concentrated (85%) phosphoric or sulfuric acid‚ five 10 mL graduated cylinders‚ 50 mL graduated cylinder‚ hot plate‚ stirring rod‚ two 400 mL beakers‚ one 250 mL beaker‚ ring stand‚ utility clamp‚ filter
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Experimental Synthesis of Aspirin and Melting Point Purity Analysis Donald Yeargin CH 222‚ Section 24221 Department of Chemistry Portland Community College Portland‚ OR Abstract The various methods available to synthesize aspirin lead to the need to examine and evaluate production efficiency and purity. The purpose of our experiment was to synthesize acetyl salicylic acid (aspirin) and then determine the relative purity of the synthesized sample by observing the melting point temperature
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Identification of a Conjugated Diene from Eucalyptus Oil Introduction: When two carbon-carbon double bonds are positioned next to one another‚ a conjugated diene is formed. Conjugated dienes undergo a cycloaddition reaction with certain double bonds to afford cyclohexenes and related compounds. The reaction is named Diels-Alder. The Diels-Alder reaction is between 1‚3-butadiene and ethylene to produce cyclohexene + dienedienophile. The mechanism of the Diels-Alder reaction is classified as a
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Manual). Procedure The procedure for this experiment was followed using the guidelines found in CHL111 General Chemistry I Laboratory Manual Fall 2013‚ Chemical Reactions of Copper. Data and Results Part A Mass of Erlenmeyer Flask- 122.3 g Mass of Copper- 0.91 g Mass of Copper in Flask- 123.2 g Observations Brown to clear gas Green to blue liquid Part B Observations Becomes cloudy and opaque Turns to dark green color Part C Observations Solution becomes darker Part D Observations
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BACHELOR OF SCIENCE (HONS) BIOTECHNOLOGY YEAR 1 SEMESTER 1‚ 2 & 3 UDBB 1164 FUNDAMENTAL ORGANIC CHEMISTRY 0 EXPERIMENT 1 PROPERTIES OF HYDROCARBONS Introduction Hydrocarbons are compounds which contain only carbon and hydrogen‚ can be classified into several types‚ depending on their structure. Aliphatic hydrocarbons are divided into three classes: alkanes (e.g. methane‚ ethane and propane) have only single bonds‚ and are said to be saturated; alkenes (e.g. ethene and propene)
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Acid-Base Titrations A Titration of Potassium Hydroxide Phthalate and Sodium Hydroxide Hanna Piper Department of Chemistry‚ SUNY College at Brockport‚ Brockport‚ NY 14420 Chemistry 205.06 Abstract Titrations are used to find the molarity of an unknown solution. A titration begins with an analyte and titrant being used to measure the unknown molarity of the analyte. In the following experiment‚ sodium hydroxide was used as the titrant and potassium hydroxide phthalate was used as the
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Procedure/Observations: 1. Weigh out ~280 mg of acetanilide in a 10 mL r.b. flask with a stir bar. 2. Then‚ add 2.0 mL of glacial acetic acid using a calibrated Pasteur pipet. 3. Stir the mixture until all of the acetanilide has dissolved. It may be necessary to add more acetic acid dropwise until full dissolution has occured. 4. In the fume hood‚ add 0.6 mL of 4.1 M bromine solution in acetic acid. 5. Cap the round bottom flask before returning to the bench. 6. For 15-20 minutes‚ stir the reaction
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Recrystallization Estopace‚ Edgie1‚ Polintan‚ Clarisse K. Professor Edgie Estopace‚ School of Chemical Engineering‚ Chemistry and Biotechnology‚ Mapua Institute of Technology; Clarisse Polintan‚ CHM145L/A21‚ School of Chemical Engineering‚ Chemistry and Biotechnology‚ Mapua Institute of Technology ABSTRACT This experiment is all about identifying the appropriate solvent for recrystallization and technique and to use the recrystallization technique in purifying a solid sample. Most organic
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Abstract: The purpose of this lab is to prepare phenylmagnesium bromide‚ a Grignard reagent‚ and react it with benzophenone to give triphenylmethanol. Once made‚ the Grignard reagent will do a nucleophilic attack on the carbonyl carbon of the ketone‚ benzophenone. The result is an alkoxide that is then protonated to give the alcohol‚ triphenylmethanol. The purity of the final product will then be considered by melting point and IR spectroscopy. Final purified triphenylmethanol weighed 8.02 grams
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Title Soda Ash: Great for the economy but detrimental to the body; So why is it involved in everyday life? Abstract Sodium carbonate‚ Na₂CO₃‚ commonly known as soda ash is used in the manufacturing of many economically important products such as the manufacturing of glass‚ chemicals‚ paper and detergents. Since sodium carbonate has a strong base‚ it is commonly used to neutralize acidic effects. Soda ash has a high pH in concentrated solutions and can irritate the eyes and skin as well
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