Based on your research and observations, write the balanced chemical equation/s of the sample/s that will give positive test for Baeyer's reagent. Samples: hexane, cyclohexene, tert-butyl chloride, toluene, water
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Based on your research and observations, write the balanced chemical equation/s of the sample/s that will give positive test for Baeyer's reagent.
Samples: hexane, cyclohexene, tert-butyl chloride, toluene, water
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- Cinnamon is made up of a mixture of many compounds. Cinnamaldehyde is the component responsible for cinnamon flavor. Several of these compounds are also a potent antimicrobial compounds present in essential oils. The following results were obtained for known concentrations of three of the compounds. Concentration (mg sample/200 uL) Cinnamaldehyde Eugenol Thymol 0.50 0.4 0.65 1.8 0.75 1.0 0.8 1.10 1.2 1.25 2.0 1.30 3.0 1.50 1.5 1.90 3.1 2.0 4.6 2.50 4.0 5.8 Determine the calibration curve equations for each component including regression. which component has the highest calibration sensitivity? A sample containing the three essential oils in part b gave the peak areas relative to the internal standard of cinnamaldehyde 2.6, eugenol 0.9 and thymol 3.8. Determine the concentration of each of the oils in the sample and the standard deviations.Based on your research and observations, write the balanced chemical equation/s of the sample/s that will give positive test for bromine. Samples: hexane, cyclohexene, tert-butyl chloride, toluene, waterYou are given an impure sample of fluorene. Your crystallization solvent choices are water, methyl alcohol and toluene. Using your understanding of polarity and solubility, predict which solvent would be the best choice for crystallization. Briefly explain your answer choice and why the other two choices were eliminated.
- REAGENT AMOUNTS In this section, you must record the actual amounts and volumes of reagens use in the lab. 090 ml Volume of methyl benzoate: mmol Equivalent to a molar amount of: 30 1.0 ml Volume of concentrated Nitric acid (16 M = 16 mol/L): Equivalent to a molar amount of : mmol Volume of concentrated Sulfurie acid acid (18 M = 18 mol/L): 3.0 ml Equivalent to a molar amount of: mmol 0.90 mL IL =0.0009 L lo0omLPart B: Miscibility of liquids 1. Place 10 drops of propan-2-ol into each of two DRY semi-micro test tubes. 2. Add 10 drops of water to one test tube and 10 drops of cyclohexane to the other test tube, shake and observe whether the two liquids in each test tube are miscible. Record your results then discard the contents of the test tubes into the organic waste container. 3. Place 10 drops of water in a clean semi–micro test tube and add 10 drops of cyclohexane to it. Record whether the two liquids are miscible. If two layers form (i.e. the liquids are immiscible) add a drop of blue food dye to the mixture and shake, then allow the two layers to reform. Based on your observation, decide whether the food dye is more soluble in water or cyclohexane and then discard the mixture into the non–halogenated waste container. Record whether the combinations of liquids shown below are miscible. Water Cyclohexane Propan-2-ol CyclohexaneUse the following atomic weights and quantities to calculate the overall % yield of 4-cyano-4'-pentyllbiphenyl. Remember that your yield must be based on the stoichiometry (balance the equation!), the limiting reagent, and that grams must be converted to moles. Filling out most of the chart will help. Give only two significant digits in your answer. If after rounding the answer is a whole number, do not include a decimal point. C = 12, H = 1, CI = 35.5, N = 14, O = 16, S = 32 formula formula weight milliliters density 4-carboxamide-4'-pentylbiphenyl thionyl chloride →> 4-cyano-4'-pentylbiphenyl 2.652 1.64 grams moles 16.917 7.100 Answer: % yield ?
- Use the following atomic weights and quantities to calculate the overall % yield of 4-bromo-4'-pentyllbiphenyl. Remember that your yield must be based on the stoichiometry (balance the equation!), the limiting reagent, and that grams must be converted to moles. Filling out most of the chart will help. Give only two significant digits in your answer. If after rounding the answer is a whole number, do not include a decimal point. C = 12, H = 1, Br = 80, Fe = 56 4-pentylbiphenyl iron 1 M bromine → 4-bromo-4'-pentylbiphenyl formula formula weight milliliters density 1.391 3.12 grams moles 3.807 4.937 Answer: 4.274 % yield ?Use the following atomic weights and quantities to calculate the overall % yield of 4-bromo-4'-pentyllbiphenyl. Remember that your yield must be based on the stoichiometry (balance the equation!), the limiting reagent, and that grams must be converted to moles. Filling out most of the chart will help. Give only two significant digits in your answer. If after rounding the answer is a whole number, do not include a decimal point. C = 12, H = 1, Br = 80, Fe = 56 formula formula weight 4-pentylbiphenyl iron 1 M bromine 4-bromo-4-pentylbiphenyl milliliters 0.616 density 3.12 grams 2.347 1.022 moles Answer: 2.985 % yield ?Table 7.4 Tests for phenols Positive Test Indicator Туре of Organic Reaction Involved Test (i.e., ppt, gas formation, change in color, etc.) Litmus test Ferric chloride test Liebermann's test Phthalein dye test
- Use the following atomic weights and quantities to calculate the overall % yield of 4-chlorocarbonyl-4'-pentyllbiphenyl. Remember that your yield must be based on the stoichiometry (balance the reaction!), the limiting reagent, and that grams must be converted to moles. Filling out most of the chart will help. Give only two significant digits in your answer. If after rounding the answer is a whole number, do not include a decimal point. C = 12, H = 1, CI = 35.5, N = 14, O = 16, S = 32 formula formula weight milliliters density 4-carboxy-4'-pentylbiphenylthionyl chloride dimethylformamide → 4-chlorocarbonyl-4'-pentylbiphenyl 3.678 1.64 6.860 0.944 grams moles 13.314 7.117 Answer: % yield ?write an equation for this lab and explain the observations that would occur: measure out 10 mL portion of 10% sodium sulphate into a clean test tube. Add 8 drops of 50% sulphuric acid and swirl. Count the number of drops (swirl after each drop) of 30% calcium chloride needed to produce a precipitate of calcium suplhate.Topic: Lucas Test for Alcohol and Phenol Explain/Discuss the expected physical and chemical results for Ethanol, Butanol, 2-Propanol, 2-methyl-2-propanol, and Phenol to Lucas Test.
