The following is a patented procedure (WO1998005630A1). .. in a comparative example to Example 5, a mixture of 3.0 g of 99 2 % 4- bromobenzaldoxime, 0.21 g 98 % sulfuric acid, and 20 g xylenes were heated at reflux for 2 h and cooled to 25 °C. GC analysis of the resulting mixture indicated a 99.8 % conversion forming 88.2 % of the corresponding 4-bromobenzaldoxime nitrile." Provide a mechanism. 66 Br H OH
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- A bottle of Na2EDTA.2H2O is labeled with an assay of 100.5%, what is this implied? What is the result of heating to 100 ºC?3. To determine ethanol content in beer using Gas Chromatography (GC) - Flame Ionization Detection (FID), which of the following is the suitable internal standard? (A) Acetone (B) n-propanol (C) Propane (D) WaterThe following volumes of a solution containing 1.10 ppm of Zn?. were pipetted into separatory funnels each containing 5.00 ml of an unknown zin c solution: 0.00, 1.00, 4.00, 8.00 and 12.00. Each was extracted with three 5-mL aliquots of CCI. containing an excess of 8-hydroxyquinoline. The extracts were then diluted to 25.0 ml and their fluorescence measured with a fluorometer. Plot the data and calculate the concentration of zinc in the sample. ml standard Zn Fluorometer reading 0.000 6.12 1.00 7.81 4.00 11,16 8.00 15.68 12.00 20.64
- Determine the gravimetric analysis of the products of complete combustion of acetylene ?2 ?2 with 200 percent stoichiometric air.A bloodhound, with an acute sense of smell, sits at one end of a long, unventilated corridor. At the other end of the corridor a small amount of an aerosol is released containing the volatile, fragrant compounds= • fructone (C8H1404) • benzyl mercaptan (CHeS) 2-acetyl-1-pyrroline (CH9NO) • acetaldehyde (C,H40) • 6-acetyl-2,3,4,5-tetrahydropyridine (C>H11NO) Rank the compounds in the chronological order they are detected by the hound. v 2-acetyl-1-pyrroline v benzyl mercaptan v6-acetyl-2,3,4,5-tetrahydropyridine v acetaldehyde fructoned) Calculate the atom economy for Ethylene Oxide (CH2CH;O) preparation CH;=CH2 + Cl2 +H2O CICH,CH2OH + HCl (Step 1) CICH2CH2OH+ Ca(OH)2 CH2CH2O + CaCl2 + H2O (Step 2),
- The boiling points for the compounds are 118 °C and 35 °C respectively. The solubility for both compounds is the same (8g/100g water). Explain this observation for (i) boiling point disparity; (ii) solubility similarity H-bonds form in diethyl ether; n-butyl alcohol forms H-bonds in water H-bonds form in n-butyl alcohol; diethyl ether forms H-bonds in water H-bonds in n-butyl alcohol; Both compounds form H-bonds in water O Both compounds form H-bonds; Both compounds form H-bonds in waterToluene reacts with nitric acid to form ortho nitro toluene and water. After carrying out the nitration operation which can be represented by the equation C6 H5CH3 + HNO3 → C6H4CH3NO2 + H20 The product mixture was analyzed and found to contain 75% ortho nitro toluene 10% water, 15% nitric acid by weight. Comment about the conversion of the reaction. What is the % excess of the reactant used? What is the quantity of toluene used for the reaction? 3.4g 5 g 2 g 100 g 49." R Lactic acid Salicylic acid Trichloroacetic acid Flexible collodion qs ad Sig: wart remover. Use as directed. (a) Flexible collodion contains 20% w/w camphor and 30% w/w castor oil. How many grams of each would be contained in 30 g of the mixture? (b) The specific gravity of castor oil is 0.955. How many milliliters of the oil is contained in 30 g of the mixture? (c) If the specific gravity of the mixture is 0.781, what are the percent w/v con- centrations of lactic acid, salicylic acid, and trichloroacetic acid in the mixture?
- SOLUBILITY – reactions with conc. Sulfuric acid Based from the video link --- https://www.youtube.com/watch?v=JmlDkC6IdKA&t=21s 1 mL of conc. H2SO4 was placed in a separate test tube. The test samples, cyclohexane and cyclohexene were added separately. Observe what happened after the reaction. Question: Based from your observation, write the results of the following samples: (a) Cyclohexane, (b) Cyclohexene, and (c) Toluene. Thank you very much!1,8-Cineole is a predominant terpene found in cranberries. The concentration of 1,8-cineole in cranberries was determined using gas chromatography. A 5.00 g sample of freeze-dried cranberry powder was added to 10.0 mL water to form a cranberry extract. The extract was filtered. A 1.00 mL aliquot was added to a 25 ml volumetric along with a known amount of internal standard (d-14 cymene) and diluted to volume with water. Standards were spiked with a fixed amount of d-14 cymene as internal standard. The following data was obtained: 1,8-Cineole (ug/mL); 1,8-Cineole (peak area); d-14 cymene (peak area) 10.0; 1260; 1880 15.0; 1865; 1850 20.0; 2520; 1855 50.0; 6280; 1865 Sample; 1976; 1840 What is the concentration of 1,8-cineole in ug per gram of cranberry? O 398 ug/g O 159 ug/g O 674 ug/g O 796 ug/g O 15.9 ug/g10:30 30 O ? 86% i AIATS For Two Year Medic. A 80 /180 (02:53 hr min Mark for Review When Potassium salt of succinic acid undergoes electrolysis at high temperature, the major product obtained is Ethane Ethyne Propyne Ethene Clear Response II