purity. The purpose of our experiment was to synthesize aspirin from acetyl anhydride‚ salicylic acid‚ and sulfuric acid. And then determine the relative purity of the synthesized sample. The procedure performed in our experiment involved chemically reacting salicylic acid and acetic anhydride in order to form acetyl salicylic acid. The limiting reactant in this chemical reaction was salicylic acid‚ with acetic anhydride present in excess in order to react with any water produced during the reaction
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Aspirin ABSTRACT: The purpose of this experiment was to find out how a reaction undergoes for a globally known painkiller called aspirin‚ and to become familiar with achieving successful yields. Aspirin is synthesized from salicylic acid and acetic anhydride. Those two chemicals are mixed together along with sulfuric acid to form a crude solid. Filtration is used separate the impurities from the crude aspirin. To get purified aspirin‚ the precipitate was heated until all the excess had been removed.
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para-aminophenol is completed by dissolving the para-aminonphenol hydrochloride salt in water‚ decolourising the aqua solution and crystallising the para-aminophenol by neutralizing the salt. The resulting para-aminophenol is reacted with acetic anhydride to produce paracetamol. The reactions are summarized as shown below: Process using Paranitrochlorobenzene as a starting raw material Paranitrochlorobenzene is converted to paranitrophenol by means of caustic fusion with caustic soda
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our ecosystem. The present study was undertaken to study the effect of heavy metals on the growth of Brasicca juncea and thereby its utilization for phytoremediation. The minimum amount of lead (0 mg/gm) was found in plant treated in 0 % concentration of lead acetate and maximum amount of lead (0.0011 mg/gm) was found in plant treated in (0.6%) concentration of lead acetate. The percentage germination for control‚ 0.2‚ 0.4‚ 0.6 percent lead acetate treated seedling was 89%‚ 88%‚ 86.66% and 83% respectively
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to make vitamin D and various hormones‚ such as estrogen‚ testosterone‚ and cortisol. The body can produce all the cholesterol that it is needs‚ but it also obtains cholesterol from food. Lieberman-Burchard test: The Lieberman-Burchard or acetic anhydride test is used for the determination of cholesterol. The formation of a green or green-blue color after a few minutes is positive. Lieberman-Burchard is a reagent used in a colorimetric test to detect cholesterol‚ which gives a deep green color. This
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Preparation of Fruit Flavors (Pear) Abstract. In this experiment an assigned Ester is prepared‚ particularly n-Propanol. The Preparation was done via Fischer reaction. In this reaction‚ a reflux set-up is required. The reflux set-up was used in the liquid-liquid extraction. After adding an immiscible solution to the compound containing n-Propanol‚ the mixture now will have two layer: the Organic and Aqueous layer. The organic layer is the extract needed and its % yield is computed resulting to
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(acetyl salicylic acid) from salicylic acid and acetic anhydride. CO2H OH salicylic acid 2g 0.014 mole O O O CH3 H2SO4 ethyl acetate CO2H O O acetyl salicylic acid acetic acid CH3 O + H3C + H3C OH acetic anhydride 5 mL 0.05 mole The limiting reagent is salicylic acid. The theoretical yield of acetyl salicylic acid is 2.52 g. Physical Data:* mp MW salicylic acid 157-9˚ 138 acetyl salicylic acid 135-6˚ 180 acetic anhydride — 102 acetic acid — 60 sulfuric acid — 98 ethyl acetate
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Experiment Description: In this experiment‚ I gathered 25 lima beans and made 5 groups for different calcium concentrations (0 mg‚ 100 mg‚ 200 mg‚ 300 mg‚ 400 mg). I used constant variables such as the amount of water‚ soil‚ and light to ensure the accuracy of the results. The growth of the lima beans was recorded over a period of 5 days. Hypothesis: If calcium is added to the soil in greater
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Section 2: Composition and Information on Ingredients Composition: Name Acetaldehyde CAS # 75-07-0 % by Weight 100 Toxicological Data on Ingredients: Acetaldehyde: ORAL (LD50): Acute: 661 mg/kg [Rat.]. 900 mg/kg [Mouse]. DERMAL (LD50): Acute: 3540 mg/kg [Rabbit]. VAPOR (LC50): Acute: 13300 ppm 4 hours [Rat]. 23000 mg/m 4 hours [Mouse]. Section 3: Hazards Identification Potential Acute Health Effects: Hazardous in case of eye contact (irritant)‚ of ingestion‚ of inhalation (lung irritant). Slightly
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The early twentieth century led to the discovery of penicillin‚ which revolutionized the use of curative agents to combat many bacterial contagions found around the globe. This was particularly useful in 1943 when the War Production Board outlined a plan to mass-produce a powdered formula of the drug to aid in the WWII American war effort.1 Penicillin’s use on Allied forces in the field reduced the number of amputations and deaths by an estimated 12-15%.2 Despite penicillin’s continued use today
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