1. If the weight of the pure recrystallized product (trans-anisalacetophenone) obtained is 166 mg, calculate the number of moles of the pure product obtained? (Molar mass of trans- + anisalacetophenone is 238.29 g/mol) [Select] 2. What is the percent yield of the pure product? [Hint: %Yield = (moles of pure product/theoretical yield in moles) x 100] [Select]
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- 2. Table of Reagents: Complete the following table of reagents (you may need to look some information up: 1 recommend the Sigma-Aldrich catalog/website as a useful source). Use the appropriate number of significant figures. Compound Mass Molar mass moles (g) (g/mol) 3. 3,84,163 34 154,25 37,83 4-tert-butylcyclohexanone 0,60 0.10 2.64.163 sodium borohydride 4-tert-butylcyclohexanol 1.32 156.27 8.45.105 Which is the limiting reagent? Calculate the % yield of 4-tert-butylcyclohexanol (show working and note significant figures).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 ?For the top one give the iupac name and the bottom one give the final product?
- Is cyclohexene (cyclic alkene compund) soluble/insoluble in NaOH? Why?Reagents a. CeHsCHO b. NaOH, ethanol c. Pyrrolidine, cat. H* j. Brz, H* d. H2C=CHCN e. H3O* f. h. BRCH2CH=CH2 i. Na* OEt, ethanol k. K* t-Buo I. CH2(CO,Et)2 m. heat CH2CH2CN LDA g. ELOC(=0)COEt Select reagents from the table to synthesize this compound from cyclopentanone. Enter the letters of the chosen reagents, in the order that you wish to use them, without spaces or punctuation (i.e. geda).please find percent yield Amount Start, (mL), Amount Start, Amount Isolated, (ml), H3PO4 Bromine (BR2) KMN04(aq) in DCM Cyclohexanol (mL), Product 8.09 7.77 6.78 positive positive
- $4/34) 2. Reduction of ethyl acetoacetate with sodium borohydride (3:38-5:32). a. In setting up the reaction described in the video you add 0.127 mL of ethyl acetoacetate, 5 mL of ethanol and 74 mg of sodium borohydride. Question #1: Which compound is the limiting reagent in this reaction? Question #2: What is the theoretical yield in this reaction? Question #3: What is the % yield if you isolated 89 mg of product?In preparation of dibenzalacetone. You obtainedbg of product. Calculate percent yield. Acetone used I29 ml Tubel Ben zaldehyde used 169 mlIron(III) Chloride Test Saved BIIIU X2 | X² | → Ix Normal Alcohol FeCl3 test color Ethanol 2-Propanol 2-Methyl-2-propanol Cyclohexanol Phenol N/A Unknown ll !!
- 1. Alcohols X and Y formed layers with Lucas reagent. Compound X formed brown precipitate with KMnO4 while compound Y did not. Which are the possible identities of compounds X and Y? a.tert-butanol, propanol b.isopropanol, isopentyl alcoholc. methanol, ethanold.tert-butanol, isopropanol2. Alcohols that cannot be distinguished using the Lucas test? a.isopropanol and methanol b.t-butyl alcohol and ethanol c.t-butyl alcohol and 2-methylbenzyl alcohol d.ethanol and n-propanolUse the following reagent table for the reaction of : cyclohexanol + H2 SO4 → cyclohexene Chemical MW (g/mol) Density (g/mL) mmols used Amount used cyclohexanol 100.16 0.9624 1.50 mL Sulfuric Acid 98.08 1.83 1.0 mL cyclohexene 82.14 How many mmols of sulfuric acid are used? (answer with 2 decimal places, no units)Use 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 ?