1. Draw out the structures to show the dehydration reaction for cyclohexanol. 2. What is the purpose of the phosphoric acid in the experiment? 3. In the first distillation, at what temperature does the cyclohexene separate from the reaction mixture? Why does cyclohexene come over at this temperature? Why doesn't the cyclohexanol come over? 4. What is present in the sample after the first distillation? 5. Explain how the cyclohexanol and water are removed from the cyclohexene in the solvent extraction step.

1. Draw out the structures to show the dehydration reaction for cyclohexanol. 2. What is the purpose of the phosphoric acid in the experiment? 3. In the first distillation, at what temperature does the cyclohexene separate from the reaction mixture? Why does cyclohexene come over at this temperature? Why doesn't the cyclohexanol come over? 4. What is present in the sample after the first distillation? 5. Explain how the cyclohexanol and water are removed from the cyclohexene in the solvent extraction step.

EBK A SMALL SCALE APPROACH TO ORGANIC L

4th Edition

ISBN:9781305446021

Author:Lampman

Publisher:Lampman

Chapter81: Extractions, Separations, And Drying Agents

Section: Chapter Questions

Problem 6P

See similar textbooks

Similar questions

In the reaction of the phenol nitration, a mixture of o-nitrophenol and p-nitrophenol is formed. he is- The melting point of nitrophenol is 45, the melting point of p-nitrophenol is 1120C. How would you interpret this difference depending on their molecular structure?
What impurity was likely removed during the recrystallization necessary and was it effective and why do you think so using the prcedure belwo and the reaction provided. PROCEDURE Synthesis of Dibenzalacetone (A) In this lab you will need to determine the amounts of the reactants you will use. We will use 0.0125 moles of acetone. You need to: (1) convert this into a volume in mL, (2) Calculate the number of moles of benzaldehyde needed based on the balanced chemical reaction, (3) Convert the number of moles of benzaldehyde into volume in mL. Your reagent table should reflect your calculated values. Mix the benzaldehyde and acetone based on the volumes from your prelab calculations in a testtube. Add 25 mL of 10% NaOH solution to a 125 mL Erlenmeyer flask along with a stir bar and 20 mL of ethanol. Make sure the temperature of the solution in the flask is below 25 C before proceeding. Add half of the solution from your test tube to the flask. Allow the solution to…
Provide details about the reaction workup. 4,4'-DIBROMOBIPHENYL [Biphenyl, 4,4'-dibromo-] Submitted by Robert E. Buckles and Norris G. Wheeler1. Checked by R. S. Schreiber, Wm. Bradley Reid, Jr., and Robert W. Jackson. 1. Procedure In a 15-cm. evaporating dish is placed 15.4 g. (0.10 mole) of finely powdered biphenyl (Note 1). The dish is set on a porcelain rack in a 30-cm. desiccator with a 10-cm. evaporating dish under the rack containing 39 g. (12 ml., 0.24 mole) of bromine. The desiccator is closed, but a very small opening is provided for the escape of hydrogen bromide (Note 2). The biphenyl is left in contact with the bromine vapor for 8 hours (or overnight). The orange solid is then removed from the desiccator and allowed to stand in the air under a hood for at least 4 hours (Note 3). At this point, the product weighs about 30 g. and has a melting point in the neighborhood of 152°. The crude 4,4'-dibromobiphenyl is dissolved in 75 ml. of benzene, filtered, and cooled to 15°.…
1. Explain the concept of Azeotropic distillation for the separation of Acetone, chloroform with neat sketch. (4 + 1 = 5Marks) . 2. Explain the application of extractive distillation in nitric acid dehydration using suitable solvent with neat sketch . (4 + 1 = 5Marks) .
After completing the synthesis and purification of 4-t-butylcyclohexene, a few drops of the product were mixed with 1 drop of NaOH and 3 drops of KMnO4, as shown in the image. Identify with the name and structure of the brown precipitate (sediment, sludge) shown in the image
Please answer the question at the bottom, Thanks. LAB NOTES FOR PREPARATION OF BUTYL MAGNESIUM BROMIDEAND ITS SUBSEQUENT CONVERSION TO AN ALCOHOL To the reaction flask were added 2.5967 gram of magnesium turnings, about 20 mlof diglyme, and a solution of 13.5942 gram of butyl bromide in about 25 mldiglyme.The procedure as per the lab manual was initiated. After the required heating timewas completed the reaction mixture was allowed to cool to room temperature.Then a solution of 6.1123 gram of acetone in about 15 ml of diglyme was addeddropwise as per the lab manual.The rest of the lab manual procedure was completed, ultimately affording 2.5532gram of an oily, clear and slightly yellow liquid, presumed to be 2-methyl-2-hexanol. Boiling point as measured by distillation was 138 – 141 deg C.About 0.8 ml of the presumed 2-methyl-2-hexanol was placed in an NMR tube towhich was added 2 drops of TMS. The tube was capped, then inverted and righted20 times to thoroughly mix the product and…
Please answer the question at the bottom, Thanks. LAB NOTES FOR PREPARATION OF BUTYL MAGNESIUM BROMIDEAND ITS SUBSEQUENT CONVERSION TO AN ALCOHOL To the reaction flask were added 2.5967 gram of magnesium turnings, about 20 mlof diglyme, and a solution of 13.5942 gram of butyl bromide in about 25 mldiglyme.The procedure as per the lab manual was initiated. After the required heating timewas completed the reaction mixture was allowed to cool to room temperature.Then a solution of 6.1123 gram of acetone in about 15 ml of diglyme was addeddropwise as per the lab manual.The rest of the lab manual procedure was completed, ultimately affording 2.5532gram of an oily, clear and slightly yellow liquid, presumed to be 2-methyl-2-hexanol. Boiling point as measured by distillation was 138 – 141 deg C.About 0.8 ml of the presumed 2-methyl-2-hexanol was placed in an NMR tube towhich was added 2 drops of TMS. The tube was capped, then inverted and righted20 times to thoroughly mix the product and…
A student attempted to prepare 1-chlorobutane by mixing 1-butanol with NaCl in acetone. Was the student succesful? Explain.
Khaira performed the synthesis of ester X. Liquid-liquid extraction is needed to extract compound X fromthe aqueous reaction mixture. Given the solubility of ester X in the following solvents. Solvent Solubility of Compound X (g/mL solvent) at 25°C water 0.278 ethanol 1.027 acetone 1.309 dichloromethane 0.891 diethyl ether 0.759 a. Which solvent must she use to extract compound X? b. Calculate the KD. c. She transferred all of the aqueous reaction mixture in a separatory funnel, and she added 100 mL of theBEST solvent (from question a). If the total volume of the reaction mixture is 100 mL, calculate the g ofcompound X that will be extracted. (Based on literature; 5.0 g of the product will be synthesized from theamount of starting material she used.) d. Her partner, Jane, repeated the same experiment but this time, she performed the liquid-liquid extraction twiceusing 50 mL of the BEST solvent (from question a). Calculate the g of compound X that will be…
Using the data below calculate the percent yield for the formation of the ether product in the acid catalyzed condensation synthesis of Methyl beta Naphthyl ether? Weight of 2-napthol ____0.505g_______________ Volume of methanol ____2ml______________ Volume of concentrated sulfuric acid _________1.0ml________ Weight of crude product ____0.295g__________ Weight of purified product ___0.144g_________ M.P. Of Product (If solid otherwise write Liquid) _____70-75 C___________
Why you need to be careful with the separation funnel while extracting the reaction mixture with a solution of sodium bicarbonate in the synthesis of isoamyl acetate using isoamyl alcohol and acetic acid. Provide the corresponding equation.
Hi! can anyone here help me to create a schematic diagram about the experiments: " 21. Preparation of Ethyne" by Pdst Chemistry, and "Activity 10: Functional Group Tests for Hydrocarbons" by FRETZ RMT since i dont know what a schematic diagram is, and what processes/contents should be in it. thank you