paper towel‚ then cut up into small pieces and placed in a 400 mL beaker. 2. 25 mL of acetone was added to the spinach and mixed with a glass rod‚ and then it was left to stand for 5 minutes. 3. The acetone was decanted into a separatory funnel without transferring any spinach leaves by using a powder funnel with a cotton plug. 4. An Erlenmeyer flask was used to press the spinach and 25 mL of acetone was added to the spinach leaves and mixed as before‚ repeated twice. 5. 25 mL of hexane
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those natural sources that trimyristin is easily extracted from it does take some time to achieve in lab. Ground nutmeg seeds are extracted with methyl ether and the resulting solid recrystallized from acetone and to yield pure trimyristin. Most of the other components of Nutmeg remain in the acetone as they are ether soluble. The hydrolysis of trimyristin follows acidification and yields glycerol and myristic acid. After the myristic acid is collected we will be using its melting point to determine
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by : Directorate of Education‚ Delhi SOME IMPORTANT REASONING BASED QUESTIONS OF ORGANIC CHEMISTRY 1. Chlorobenzene is less reactive than chloromethane. Ans. In chlorobenzene‚ each carbon atom of benzenering is sp2 hyridised and is electron withdrawing. Chlorine atom donates a lone pair of electron and acquire positive charge. The negative charge is delocalised on ortho and para position by resonance. C-Cl bond acquires partial double bond character and is 169 pm as compared to 17.0 pm in chloromethane
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Analysis of an Unknown Mixture Performed: 2/13/14 Submitted: 3/3/14 Abstract: The purpose of this experiment was to separate and identify the two unknown compounds. The sample used was 105 and it contain 2-propanol and 2-heptanone. IR spectrums were taken of the contents of the second and sixth test tubes and showed the presence of an OH functional group and a small amount of ketone in test tube two and a large presence of ketone in test tube six. The average boiling points of the test tubes
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hydrochloric acid 2 M sodium hydroxide 600 mL beaker 250 or 400 mL beaker Ice water Distilled water Stirring rod Bunsen burner Ring stand Al wire‚ 18 gauge or heavier Graduated cylinder pH paper Watch glass‚ 90 mm Goggles Acetone Procedures: Conversion 1: THIS IS ALREADY COMPLETED FOR YOU!!! Copper reacts with nitric acid to produce a brownish-orange gas called nitrogen dioxide. The blue color of the solution is characteristic of many copper compounds dissolved in
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reactions desire tertiary substrates most‚ followed by secondary‚ and lastly primary. Because the strength of the nucleophile is unimportant‚ an ionizing solvent is needed. Water is the best solvent‚ followed by methanol‚ ethanol‚ propanol‚ and lastly acetone. In experiment two‚ the tertiary 2-bromo-2-methylpropane was the most favored reactant followed by the secondary
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THE MICROSCOPE • Vol. 60:2‚ pp 63–72 (2012) C R I T I C A L FOCUS Brian J. Ford Solving the Mystery of Spontaneous Human Combustion L human combustion (SHC) ast November‚ a 42has been well docuyear-old man was In a matter of minutes‚ people have mented‚ and television has standing outside a record sought to demonstrate an store in Sweden‚ appar- burst into flames and were completely answer. But in the scienently waiting for someone. destroyed. All that remained was a heap
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tablet using Thin Layer Chromatography (TLC) analysis. The procedure involved preparing TLC plates‚ solubilizing standard analgesics (ibuprofen‚ aspirin‚ acetaminophen‚ caffeine) and the unknown in isopropyl alcohol (IPA)‚ and developing the plates in acetone. Rf values were calculated for each compound. The unknown tablet showed an Rf value of 0.584‚ closely matching that of caffeine (0.600)‚ suggesting similar polarity. The findings indicated that the unknown tablet likely contains caffeine or a closely
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Solvents used were water‚ methanol‚ n-butanol‚ ethylene glycol‚ acetone‚ hexane‚ toluene‚ ethyl acetate‚ and dichloromethane. Then added to the vials was 0.5 mL of isooctane in each one. The vials were then swirled and observed to determine solubility. In part two of the experiment‚ 0.5 mL of concentrated sulfuric
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Introduction: Doing laundry has been a common household activity for years. Whether the technology was beating the garments on rocks by the river or pushing buttons on programmed washing machines‚ this process depends on water and a mechanical action usually assisted by soap or detergent. The purpose of a detergent is to remove ordinary stains and other matter. More often than not‚ the soap/detergent agent holds stains in suspension as they becomes loose during the wash cycle‚ and are subsequently
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