cyclohexene from cyclohexanol lab report conclusion

The only unaffected color was cyclohexene with bromine in dichloromethane. %PDF-1.7 Cyclohexanone is used as a precursor for nylon. the placement of your thermometer. Add 7 mL (7) of Cyclohexanol: Record the mass and get signature 412 29 Cyclohexene is an unsaturated hydrocarbon which is very reactive due to its negative center (Ault, 1973; Williamson, 2013; Eagleson, 1994). contains the OH peak at around 3300-3400 cm-1 and cyclohexene does not. And this is achieved by distilling off the product instead of distilling off water. Tare a 50 mL RBF on a cork bottom. It formed a double bond on cyclohexene, this also has a lower boiling point than From that, 6.0 mL cyclohexanol weighing 5.7 grams, it is expected to give 4.7 grams of cyclohexene, but in this experiment 2.299 grams of cyclohexene is produced and the percentage recovery calculated was 48%. 5. At first step, the hydroxyl group is protonated by sulfuric acid which then can function as a good leaving group. Remove distillate and place it in a sealed centrifuge tube. Mass of Cyclohexene 3 a. The mixture was distilled and distillate was collected into the receiver flask. The flask was fit with the factional column. Describe, with the use of equations, the reaction of the product (cyclohexene) with BR2 and alkaline KmnO4. Copyright 2023 StudeerSnel B.V., Keizersgracht 424, 1016 GC Amsterdam, KVK: 56829787, BTW: NL852321363B01. remained colorless which indicated the test was positive. The purpose of this lab is to prepare cyclohexene by dehydrating cyclohexanol. stream endstream endobj startxref Separate the organic layer in the stoppered 25mL Erlenmeyer Measuring Length and Volume Lab Investigation-1, Unit 8 Nucleophilic Substitution Lecture Notes. %PDF-1.3 0000007036 00000 n Phosphoric (V) acid is highly corrosive. <<511EF0B57581D248803BDB71173CD8C9>]>> 2Two oxygen atoms of the permanganate ion bond to 2 carbon atoms, which doubly bond together, then the bonding between these oxygen atoms and the manganese atom are then broken. In this experiment, Cyclohexanol is dehydrated to cyclohexene according to the following reaction: Tb= 160-161 oC T b= 83 oC Because the OH group is a very poor leaving group, an alcohol is able to undergo dehydration only if its OH group is converted into a better leaving group. Next, to the flask, a boiling chip, 8.0-mL of phosphoric acid and 10 drops of concentrated sulfuric acid were added. Write down observations for alcohol test demo Results: Mass of Cyclohexanol 7 Mass of Cyclohexene 3 BP of Cyclohexene 67. 2. This shows that protonated cyclohexanol has been oxidized to dihydrogen phosphate into because of it losing its The final step is removal of a beta hydrogen by water to form the alkene. xb```b````e``{ ,@Qm-1}hP``P23P7)n-B(Y`1dF{@bPR)HK4PF7kL@w1\ex4i"C&}. I think I executed the steps and <>/ExtGState<>/XObject<>/ProcSet[/PDF/Text/ImageB/ImageC/ImageI] >>/MediaBox[ 0 0 612 792] /Contents 4 0 R/Group<>/Tabs/S/StructParents 0>> b. Lab - Studocu Cyclohexane and the lab report for this course dehydration cyclohexanol chm3003 laboratory sadaf afif may 07, 2018. lab partner: khoe abstract: in this lab, Skip to document Ask an Expert Sign inRegister Sign inRegister Home Ask an ExpertNew At the intermediate stage, a carbocation is attacked by the bromide ion to form the trans-1,2-dibromocyclohexane. 1. In the product, the OH has been eliminated which is why it is not seen on the IR for the 0000003724 00000 n 0000003094 00000 n 0000053909 00000 n 0000005117 00000 n % yield 58% % purity 100%. The acid used in this experiment is 85% phosphoric acid and the alcohol is cyclohexanol. The still head was connected with a condenser. the more substituted alkene The synthesis of cyclohexanone is simple. OXIDATION OF CYCLOHEXANOL TO CYCLOHEXANONE INTRODUCTION Alcohols can be oxidized to aldehydes and ketones using common oxidizing agents. Bromine is toxic and corrosive, especially in its state. The out of plane bending peaks tell us that the sample The junction between the still head and the condenser was wrapped up in a piece of aluminum foil. 4. When testing with the Br 2 the mixture. The yield did prove to be an alkene, however, from the bromine test. By mixing the Cyclohexanol with Phosphoric acid in the RBF it initiated the E1 reaction Experiment #1: Synthesis of Cyclohexene from Cyclohexanol Share this: Facebook Twitter Reddit LinkedIn WhatsApp Cite This Work To export a reference to this article please select a referencing stye below: APA MLA MLA-7 Harvard Vancouver Wikipedia OSCOLA UKEssays. We boil the product not exceeding 83 can extract higher purity of cyclohexene for the next step adding anhydrous sodium sulphate. 12. Mass of Cyclohexanol 7 For example, cyclohexene can be oxidized by hot potassium permanganate to form hexadioic acid, which is a method to synthesize carboxydioic acid. 2 0 obj LcpR #Ob@UQ\!Y_k$y 0000070921 00000 n 0 Theoretically, in a dehydration reaction, one mole of alcohol produces one mole of alkene in a 1:1 ratio and 1 mole of water (reference 1), From that, the percentage recovery calculated for cyclohexene was 48%. The principle of distillation as a separation method is based on the difference in boiling points of substances. 3. The general approach towards carrying out an organic reaction: (1) Write out the balanced reaction, using structural formulas. The cyclohexene is an unsaturated hydrocarbon, the -electrons attacks a bromine atom in a bromine molecule to carry out a heterolytic cleavage that yields the cyclic bromonium ion. What structural information can be obtained from these bands? Make sure everything is clamped correctly, set up ice water bath to What is/are the significance of these reactions? The Synthesis of Cyclohexene from Bromocyclohexane An Elimination (E2) Reaction Pre-lab assignment: Learn the mechanisms of E2 and E1 reactions, Experimental Organic Chemistry A Miniscale and, Chemistry 2283g Experiment 4 Alkenes 4-1 EXPERIMENT 4: Alkenes Preparations and Reactions E1 Mechanism, ORGANIC CHEMISTRY 4th ed - Francis A. Carey, f o u r t h e d i t i o n ORGANIC CHEMISTRY Back Forward Main Menu TOC Study Guide TOC Student OLC MHHE Website, f o u r t h e d i t i o n ORGANIC CHEMISTRY, Organic Chemistry with Biological Applications, Survey of Organic Chemistry Laboratory Manual, CHEMISTRY HIGHER SECONDARY -FIRST YEAR VOLUME -II A Publication Under Government of Tamilnadu Distribution of Free Textbook Programme (NOT FOR SALE. hb```,B eah``9|BabnnGk[[AN\Qz"H9CGn'= @d i$H3v 6A BSFOvaLWa>Al3433,oL"U B3 lO 6##D0 j@ This is most likely an E1 reaction, which means it has an intermediate carbocation formed. 0000008817 00000 n 6. Cyclohexene is oxidized by potassium permanganate to form. NO4PwOgMDIm]8CLH&n!c}w2oJNc y;w/_%o+7e :A0Z%O-X,~IDM}0_8oW`Ascv?JaAIJXZs2!US)BsM|=*nCq6c[8ucQ|&It 4gru'I4KUNp*D Zf4 OJHGs%C~Hb%1 Knx @VH+:6M5{r;' 0v~wf~; w9Ds[ZH!-/Y $z6hr'wApC $S*Kd!5$p(dwVQk?_\_qWYLdtdBs>e;wf?^m*o tX|UNX(NiQx< Also, I would me more accurate with my weighing of the cyclohexanol and % yield 58% As we add excess amount of anhydrous sodium sulphate into the mixture, the water can be absorbed by it and the remains are the cyclohexene and the rest of the anhydrous sodium sulphate solid. The depolarization of bromine in chloroform is by breaking the bromine molecule. Lab Report 23 title: preparation of cyclohexene name: albina kukic chm instructor: dr. yong lu date of experiment: goal of the lab: the goal of this experiment Skip to document Ask an Expert Sign inRegister Sign inRegister Home Ask an ExpertNew My Library Discovery Institutions Grand Canyon University Auburn University Keiser University If the phosphoric acid. If had to this experiment over again I would try to pay more attention to the boiling point This method of synthesizing cyclohexene. Title: The preparation of cyclohexene from cyclohexanol. A simple distillation is used to perform the synthesis of cyclohexene from cyclohexanol. b. It is also an example of an elimination reaction, which proceeds by a first order mechanism via an intermediate carbocation. : an American History (Eric Foner), Forecasting, Time Series, and Regression (Richard T. O'Connell; Anne B. Koehler), Civilization and its Discontents (Sigmund Freud), Cyclohexane and the lab report for this course. The second part of the experiment was . In this experiment, cyclohexanol is dehydrated to cyclohexene n the presence of concentrated phosphoric acid: Distillation is employed in this experiment to synthesize and purify cyclohexene. Also, in this process, in order to improve the yield of the products, the equilibrium is shifted toward the product. A few drops of bromine in chloroform and dilute potassium permanganate (VII) solution were added respectively. The mixture was refluxed until the thermometer showing 80-90(not higher than 90) to collect the distillate for about half an hour. The lab began by obtaining 6.0 mL of cyclohexanol into a 50-mL round-bottomed flask. - The method to get high % yield of cyclohexene is showed below. 9. methylcyclohexanol. because the concentrated salt sodium wants to become more dilute and because Procedure: Note: Cyclohexene is a malodorous liquid. Dry with sodium sulfate (wait for snow globe like appearance) Cross), Forecasting, Time Series, and Regression (Richard T. O'Connell; Anne B. Koehler), Chemistry: The Central Science (Theodore E. Brown; H. Eugene H LeMay; Bruce E. Bursten; Catherine Murphy; Patrick Woodward), Campbell Biology (Jane B. Reece; Lisa A. Urry; Michael L. Cain; Steven A. Wasserman; Peter V. Minorsky), Biological Science (Freeman Scott; Quillin Kim; Allison Lizabeth), Psychology (David G. Myers; C. Nathan DeWall), Principles of Environmental Science (William P. Cunningham; Mary Ann Cunningham), Educational Research: Competencies for Analysis and Applications (Gay L. R.; Mills Geoffrey E.; Airasian Peter W.), Civilization and its Discontents (Sigmund Freud), Give Me Liberty! The anti-bumping granules are added when the liquid is cold. Finally, the cyclohexene product was transferred from the flask to a pre-weighed sample vial by using a pasturer pippet. Notice the C-H stretching the hexanol: anything slightly to the left 0000003130 00000 n methylcyclohexene is located at around 650-850 wavenumbers and consists of The depolarization of bromine in chloroform is by breaking the bromine molecule. water works to pull the water from the organic layer to the water layers. Y6}HJe0(c4C.K%3kbQ/VRf H"4b?9ZP.Zj]{umu*z6|J_=."ckl=A"!wW|en+o 5k-lP$>jP$lkQa g 5,4_CjK Q1::Y4=Lq5yyg>rb>WztH&w'vuZ,ul8MTD1J~2GmUqAHmn\^p|Y; Gj[; MqE_KrNXW%KqgH>R}>&I5`O:9v_w$o[}>mMEjx4%;,^HT2 &SbQ`>]Rhv8QA}KU@>ji8*X}Ue{F\YG>(3%f4qvurl9 yr.+N'-yZH^-#v'pu[&`}YWZV.8y "Vm1 Gj*h@4vn4";:Ij/Fo$}LRqw-5Q 0000004410 00000 n %PDF-1.4 % Objectives: To prepare cyclohexene from cyclohexanol by an elimination method and to test for unsaturation in product. Although 1-methylcyclohexne could also be produced but due to Saytzeffs rule, because of higher stability, the products from 3 carbocation are favored over the products of 2 carbocation. Add saturated NaCl (aq) and shake It was about 85% cyclohexanol and 15% something else. For the reaction between bromine in chloroform (CHCL3) and cyclohexene, the observation was a depolarization of bromine, from the reddish bromine to colorize. For example, cyclohexene can be oxidized by hot potassium permanganate to form hexadioic acid, which is a method to synthesize carboxydioic acid. At the end of the separation, the dry organic extract (cyclohexene) was weighed again. 0 Mass the product and find the % yield In this experiment, 1 of saturated sodium chloride is used to rinse the Hickman head 4 0 obj Discussion: An IR is run to compare and identify functional groups. Cyclo-hexene has low boiling point and water has higher, as the temperature reaches the boiling range of cyclohexene, it distills up the column and received into the receiver. b. First 2 H 3 PO 4 (Phosphoric Acid) then 30 drops of sulfuric acid. What major alkene product is produced by dehydrating the following alcohols? of that is indicative of sp2 or sp C-H stretches, which you can see in the hexene After a several steps cleavage, the permanganate (VII) ion is reduced to manganese (IV) oxide and the cyclohexene is oxidized so that the original purple color change to brown color. receiving flask. Feb 23 Office Hour - Lecture notes in pdf format. After filtration, the remained dehydrating agent can be filtered out so the dry organic cyclohexene can be obtaine. 0000003379 00000 n Theoretical mass of cyclohexene (g) = moles of cyclohexene (mol) x molecular weight (g/mol) = 0.057 mol x 82.15 g/mol = 4.7 g, = (mass of recovered compound,g /mass of compound in original mixture)*100. More details Words: 537 Pages: 3 Preview Full text Related Documents Synthesis Of Cyclohexene Lab Report December 2019 32 Synthesis Of Aspirin Lab Report s#MS0U:76[c'nb;nzr|&k/uyU\Gbu_R5`h+S=>x>_?^\Iw;_%:=w/0s6`fn~ 6j]PXy#NTf2 zWY-@Y-NyQul#jxnLY[m69Hx3h;>;Lz>_>p'9AiJRT;N`W}>.Czo&+1>oRPCUB85VYSAoSj"J.WJCVymKwW;M " DMxDizBPa9D"{#a&R~~4%JnwV0P;S oaQ0X%0iC:g( Rn}Wb$Y@SK4whT0$S]GUNf=@fcf^]0e QOf`5o\Wty7sG.60}UQA}@Ao]d]+.hqe;"|8.wo'9utCegmYO#*,}Rh/gz symmetrical alcohol Obtain an IR of YOUR product using the salt plates. The salt Theory: In most cases cyclohexanol can be dehydrated from cyclohexane by performing a . By using, LeChatieliers principle and a distillation apparatus, equilibrium can be forced to form, more cyclohexene. Conclusions: By mixing the Cyclohexanol with Phosphoric acid in the RBF it initiated the E1 reaction mechanism by the protonation of the OH group forming a good leaving group. 0000001402 00000 n Boiling points were at 63 to 69 degrees as first drop occurred at 66 degrees. endstream endobj 322 0 obj <. 1-methylcyclohexanol : 1-methyl-1-cylohexene is the major product because it is Why is saturated sodium chloride, rather than pure water, used Clamp the apparatus at a suitable position, with the movable parts uppermost and firmly but not too tight. In the test between cyclohexene and bromine in chloroform, the brown solution is decolorized. Cross), The Methodology of the Social Sciences (Max Weber), Principles of Environmental Science (William P. Cunningham; Mary Ann Cunningham), Chemistry: The Central Science (Theodore E. Brown; H. Eugene H LeMay; Bruce E. Bursten; Catherine Murphy; Patrick Woodward), Give Me Liberty! Keep cyclohexene in the fume hood when using it. Introduction: The purpose of this lab was to prepare an alkene, cyclohexene, by the dehydration of an alcohol, cyclohexanol. The major product obtained from E1 dehydration of 2-methylcyclohexanol is 1-methylenecyclohex-ene. Higher the temperature of the liquid was, the longer the compounds need which results in better separation. e. 1,2-cyclohexanediol : cyclohex-1-enol is the major product and it can be Cyclohexene. It is reverse of addition reaction. mechanism by the protonation of the OH group forming a good leaving group. What is the function of sodium chloride and anhydrous sodium sulphate in this experiment? From this data, number of moles of cyclohexanol reacted is calculated. sals have a stronger attraction to water than to organic solvents. 0000008222 00000 n Discussion This experiment was all about observing the laboratory procedure in the preparation of cyclohexene from cyclohexanol. this compound and do not leave drying agent, glass wool or towels coated with the compound lying on the bench. Theory Cyclohexene is a commonly used intermediate in the formation of different industrial compounds such as adipic acid, maleic acid, and carpolactam. Of moles of extracted dry cyclohexene, = 14.22/ [(12.01) (6) + (1.008) (12) +16.00], = (No. The phosphoric acid is a catalyst and as such increases the rate of reaction but does not affect the overall stoichiometry. If the thermometer bulb is pushed too low of the position as indicated, it cannot register the temperature of the vapour coming out. We will use the cyclohexanol that we purified in our previous experiment . Procedure To increase a little bit the reflux temperature not only can increase the purity of cyclohexene but also increase the reaction rate. Notebook and Report." Background Information for the Synthesis of e: In the presence of a strong acid, Cyclohexen with the addition of heat, an alcohol can be dehydrated to form an alkene (figure 1). 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We can use phosphoric acid as a catalyst to synthesize cyclohexane from cyclohexanol via E1 reaction. Dehydration reactions are usually defined will have a C=C stretch at about 1680-1620, with associated alkenyl C-H stretch <> 0000001676 00000 n a. r={mpOIF zq5%\K9Z[Z$fY. startxref Death Penalty Research Paper - Can Capital Punishment Ever Be Justified, Skomer Casey, How Do Bacteria Become Resistant Answer Key, ATI System Disorder Template Heart Failure, Analytical Reading Activity Jefferson and Locke, CCNA 1 v7.0 Final Exam Answers Full - Introduction to Networks, SCS 200 Applied Social Sciences Module 1 Short Answers, ACCT 2301 Chapter 1 SB - Homework assignment, 1-1 Discussion Being Active in Your Development, Leadership class , week 3 executive summary, I am doing my essay on the Ted Talk titaled How One Photo Captured a Humanitie Crisis https, School-Plan - School Plan of San Juan Integrated School, SEC-502-RS-Dispositions Self-Assessment Survey T3 (1), Techniques DE Separation ET Analyse EN Biochimi 1. Market-Research - A market research for Lemon Juice and Shake. This, water had to be separated so a separatory funnel was used to separate the two and it is, very possible that some cyclohexene was also removed along with the water. 5. xref Bromine in dichloromethane and 1% potassium permanganate and 10% sulfuric acid were used. - The reaction of changing the cyclohexanol to cyclohexene is EN1 or EN2 reaction mechanism. Tertiary carbocations are more stable, therefore the formation of the product is faster. hbbd```b``3@$?XLE"Y]`:0 I 0V stream Figure 5.1 Preparation of cyclohexene 1,0 H.SO, sulfuric acid cyclohexanol cyclohexene Sorry, preview is currently unavailable. x\[o8~Gy6VDR`im }h';u_?qDRvd)2EsH_l>if}9U7M}fya]z}iwuz$%(gOh}z-Fd1)2tynSVl@R^vz%B??NO>+n 1E4F&G[Bo.vL!J#Go_ t/?^EN[|OFu3fn4?LFdFvL0n'"Li.&wi7r,UEX RL"cx#y. 341 0 obj <>/Filter/FlateDecode/ID[<3AC64CA9DCB4EF4D8E776CEFF096BA32>]/Index[321 30]/Info 320 0 R/Length 102/Prev 323258/Root 322 0 R/Size 351/Type/XRef/W[1 3 1]>>stream The above reaction occurs at faster rate as the formation of stable intermediate.There is a formation of a tertiary carbocation. Then the flask was swirled to mix the content. As if the product received over 90 degree is the other product, like the water or acid vapours, not the cyclohexene. Cyclohexene is relatively non-polar and it does not dissolve sodium chloride. % Suggest improvements. followed the directions well. endobj We used H 3 PO 4 as the Cyclohexene is oxidized by potassium permanganate to form cis-1,2-cyclohexanediol. The yield obtained from the original 22.25 g of cyclohexanol was 10.12 g of, cyclohexene, giving a percentage of 45.58%. The 5 drops of dry organic extract was added into 2 test tubes separately and evenly. 321 0 obj <> endobj 2021-22, Kami Export - Jacob Wilson - Copy of Independent and Dependent Variables Scenarios - Google Docs, 1-3 Discussion- Population, Samples, and Bias, SCS 200 Applied Social Sciences Module 1 Short Answers, EDUC 327 The Teacher and The School Curriculum, EMT Basic Final Exam Study Guide - Google Docs, Focused Exam Alcohol Use Disorder Completed Shadow Health, Test Out Lab Sim 2.2.6 Practice Questions, Chapter 2 - Summary Give Me Liberty! April 20 Office Hour - Lecture notes in pdf format. Lab report cyclohexene - Dehydration Cyclohexanol CHM3003 Laboratory Sadaf Afif May 07, 2018. Chromatography displays how polluted it is with different liquids. When comparing the IRs of both cyclohexanol and cyclohexene, the cyclohexanol of saturated sodium chloride solution was added to distillate, a dry and clean conical flask was weighed and added with 1g of anhydrous sodium sulphate, Then the upper layer of the mixture was drawn off and placed into a this conical flask, After that, this layer was filtrated by using filter paper and funnel to remove the used sodium sulphate. % The first step in this mechanism is protonation of the alcohol group by the acid. Enter the email address you signed up with and we'll email you a reset link. dehydrating agent for this experiment. 6. Cyclohexene from Cyclohexanol Introduction: The purpose of this experiment is to synthesize cyclohexene from cyclohexanol, this is accomplished through the elimination of the OH functionality from cyclohexanol by an acid (sulfuric or phosphoric) to yield cyclohexene and water; The intermediate step of this reaction yields a carbocation that can For the reaction between dilute alkaline potassium permanganate (VII) solutions, the observation was the solution change from purple color to brow color. In this experiment, some cyclohexene lose during the extraction of the organic layer from the distillate. during the 1st step of the reaction mechanism the OH is protonated forming a good leaving group. a. Cyclohexanol : only possible outcome is cyclohexene because the substrate is This experiment shows that one could prepare cyclohexene by dehydrating cyclohexanol. ", This page is maintained by The University of Massachusetts Biology Department.University of Massachusetts AmherstSite Policies, The University of Massachusetts Biology Department. This new feature enables different reading modes for our document viewer. cyclohexene as the sole product [equation (1)], and no rearrangement is possible in this reaction. Firstly, the water tap was opened to let water into the condenser. grams of cyclohexene is produced and the percentage recovery calculated was 48%. a. The second step is the loss of water to form the carbocation. I was not as prepared as I would have liked however even not being spectrum. Davis 1 Brenden Davis Professor Kashfi 12/10/20 Experiment #9 Cyclohexene from Cyclohexanol Aim: The purpose for conducing this lab experiment is to convert cyclohexane into cyclohexanol. Water which is neutral, stable and a good leaving group, leaves forming a carbocation. 0000003647 00000 n BP of Cyclohexene 67. Due to the higher steric effect, the lower favorable to proceed EN2 reaction, so it proceed SN1 reaction mechanism. after the initial distillation. Introduction Gas chromatography-mass spectrometry is an instrument which is used to separate gaseous substances and it functions as an analyzer for the compound. % purity 100%. To increase the purity of the cyclohexene, the temperature of the reaction should not be too high in order to prevent from more water being distillated. You can easily see the stretch between 3400-3300 in 4-methylcyclohexanol. The acid used in this experiment is 85% phosphoric acid and the alcohol is cyclohexanol. Why the temperature of the still head should not exceed 90 degree in this experiment? 0000054540 00000 n After a several steps cleavage, the permanganate (VII) ion is reduced to manganese (IV) oxide and the cyclohexene is oxidized so that the original purple color change to brown color. 4 0 obj In the test between cyclohexene and bromine in chloroform, the brown solution is decolorized. Synthesis of Cyclohexene via Dehydration of Cyclohexanol . In this experiment, cyclohexene was formed by an elimination reaction. brown color which also indicated that the test was positive. From a 6.0 mL of cyclohexanol, 2.29 grams of cyclo-hexene is produced. %%EOF 0000070654 00000 n for this procedure and the subsequent washing of the organic layer? During the distillation process the temperature did rise, to be over a little 100 C and that means water was present with the cyclohexene. Copyright 2023 StudeerSnel B.V., Keizersgracht 424, 1016 GC Amsterdam, KVK: 56829787, BTW: NL852321363B01, Brunner and Suddarth's Textbook of Medical-Surgical Nursing (Janice L. Hinkle; Kerry H. Cheever), The Methodology of the Social Sciences (Max Weber), Business Law: Text and Cases (Kenneth W. Clarkson; Roger LeRoy Miller; Frank B. Synthesis of Cyclohexene from Cyclohexanol. Although, the percentage recovery of cyclohexene is low, the outcomes of the experiment is achieved because cyclohexene is obtained by dehydrating cyclohexanol. %%EOF 440 0 obj<>stream d. 2,2-Dimethylcyclohexanol : 1-dimethylcyclohex-1-ene is the major product Course Hero is not sponsored or endorsed by any college or university. Terms in this set (23) purpose. See the last page of this handout for more information. At the end, 0.313 grams were recovered which is about 15.5% recovered from the total 2.02 grams used. Procedure: Pour cyclohexanol (10.0 g, 10.6 mL, b.p. Exactly 2.02 grams of cyclohexanol was used and having to find % yield, different combinations of methods were used to recover. The reaction involved is shown in Figure 5.1. 4. The unsaturation tests were both positive. Normally a nucleophile would attach to this carbocation, but in this experiment there was no nucleophile that was present. decomposition of the molecule with the leaving group. The second step is the loss of water to form the carbocation. An elimination reaction is performed. A reason that yield wasnt higher may have been that, water was in the condensing flask. In the experiment, 6.0 mL of cyclohexanol was used. Next, the flask was placed on a heating mantle set at 7. at 3100-3010. from Dr. Fealy. Having used all the procedures done before this experiment such as finding melting points, densities, molecular weights, and more combination of extraction, distillation, recrystallization, chromatography was done.

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