chains present‚ both of them are methyl groups. The second step of the naming process is to label the carbon atoms so the atoms bonded on the side chains have the lowest number possible (see figure 2). In this case if the carbon atoms had been labelled from the other direction the methyl group on carbon 4 could continue to be labelled as carbon 4‚ however the second methyl group on carbon 3 would be labelled as carbon 5. Therefore the numeration is chosen where the methyl groups are attached to 3rd and
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Chapter 17: Alcohols and Phenols C O O H H sp3 alcohol pKa~ 16-18 phenol (aromatic alcohol) pKa~ 10 Alcohols contain an OH group connected to a saturated carbon (sp3) Phenols contain an OH group connected to a carbon of a benzene ring O H C C H C C O chemistry dominated by the keto form 76 enol keto H O H R O H R O R R O O R’ water alcohol R S H ether R S R peroxide R S S R’ thiols thioether disulfides
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EXPERIMENT 4: Synthesis of Salicylic Acid from Wintergreen Oil Abstract: The purpose of this experiment is to take methyl salicylate (wintergreen oil) and by heating it under reflux with NaOH as a solvent‚ and then cooling the mixture with H2SO4 as another solvent‚ synthesize salicylic acid. The final step involves purify the product to produce as pure a sample of salicylic acid as possible. This process allowed for the successful production of 1.406g salicylic acid‚ an 82.70% yield. The NMR and
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composed of a compound referred as bis-GMA‚ or bisphenol A glycidyl methacrylate. This aromatic methacrylate is considered to be a rigid polymer because of the benzene rings near its center‚ and also provide specific sites for free radical polymerization from its terminal methacrylate groups. Since this structure has hydroxyl groups near the benzene ring‚ this polymer is considered to have high viscosity. Since high viscosity will affect the rigid structure after polymerization‚ a compound‚ typically triethyleneglycol
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following is vinyl halide? (a) CH2CL2 (b) CH2= CH-Cl (c) CH = C-Cl (d) 6) What is B in R-OH + PX5 R-X +B+ HX? (a) HPOX3 (b) H3PO3 (c) POX3 (d) H3PO2 7) Which catalyst is used in preparation of bromobenzene by bromination of benzene? (a)FeBr3 (b) HBr (c) AlBr3 (d) Br2 8) By which name the reaction CH3 - Br + Ag- F CH3F + AgBr is known? (a) Grignard (b) Wurtz (c) Fitting (d) Swartz 9) What are nucleophilic reagents according to Lewis theory? (a) Acid
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Contents PART XV ANALYTICAL CHEMISTRY Chapter 63 Detecting the presence of chemical species Action of heating solid sample strongly 1 Chapter 64 Separation and purification methods Centrifugation Sublimation Partition equilibrium of a solute between two immiscible solvents Two-dimensional thin-layer chromatography 2 2 3 6 Chapter 65 Quantitative methods of analysis Detection of end point in acid-alkali titration 8 Chapter 66 Instrumental analytical methods More
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skin contact (irritant‚ permeator)‚ of eye contact (irritant)‚ of ingestion‚ of inhalation. Slightly hazardous in case of skin contact (sensitizer). Dichloromethane (CH2Cl2) 84.93 -96.7 Soluble in water Miscible in acetate‚ alcohol‚ alkane‚ benzene‚ CCl4‚ ether‚ CHCl3 Very hazardous in case of eye contact (irritant)‚ of ingestion‚ of inhalation. Hazardous in case of skin contact (irritant‚ permeator). Inflammation of the eye is characterized by redness‚ watering‚ and itching Sodium Bicarbonate
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formula would be C8H11N with a HDI of 4. Looking at the IR spectroscopy‚ there is a sharp peak at around 3000 cm-1‚ which indicates C-H bonds. At around 1600 cm-1‚ we see a peak which tells us there are C=C that might corresponds to an aromatic benzene ring‚ which I proved using the NMR. The Nitrogen is also present on the IR spectroscopy leaving its mark with a peak at around 3200 – 3500 cm-1. Lastly‚ I finalized my structure using the NMR spectroscopy. With the information I have collected and
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2% cane sugar 5. The volumes of M/10 HCl and M/2 HCl required to prepare 2 L of M/5 HCl are (a) 1600 mL and 400 mL (b) 1200 mL and 800 mL (c) 1500 mL and 500 mL (d) 1100 mL and 900 mL 6. An X molal solution of a compound in benzene has a mole fraction
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The report “China Coal Tar Industry Report‚ 2013-2016″ by Research in China is now available at chinamarketresearchreports.com. Contact sales@chinamarketresearchreports.com with “China Coal Tar Industry Report‚ 2013-2016” in subject line and your contact details to purchase this report or get your questions answered. Synopsis Amid China’s economic slowdown in 2013‚ the coke price continued to fall and the coking industry remained weak‚ thus the situation of oversupply would not get changed in
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