Cyclohexene Lab Report

This way, cyclohexane is converted to adipic acid or hexanedioic acid. Since the product is soluble in hot water, the two-phase systems (organic cyclohexane and aqueous hydrogen peroxide) slowly become a single aqueous phase. In the end, only H2O2 and cyclohexene can be changed, tungstate and the phase transfer catalyst can be tapped and reused. The phase transfer catalyst used were a mixture of aliquat 336 and potassium hydrogen sulphate.

After completing the experiment, a yield of 0.01 g of an impure, solid purple, precipitate was created, however this yield will not be considered for percent yield or for future use due to its impurity in nature. This conclusion on the purity of the substance is drawn from the information for pure tetraphenylcyclopentadienone; pure tetraphenylcyclopentadienone has a characteristic black/purple tint to its crystals, and said crystals are very small, almost sand-like in state1. Comparing this description to the description of the experimental sample, a clear main difference is the tint of the color, which was solid purple as opposed to the expected black/purple (this purple tint may

To transition from an alcohol to an alkene, the alcohol must be dehydrated with the help of an acid through a reaction known as an E1 mechanism.1 The first step of an E1 reaction is the formation of a carbocation intermediate. This carbocation is produced by the removal of a halogen or a substituted group.2 In this experiment, the hydroxy (OH ) group of the alcohol is removed and this produces the carbocation. The OH- group is removed due to the presence of phosphoric acid. The phosphoric acid is used in the process of adding an additional H+ to the OH- group on the alcohol and assists the OH- in leaving, making the reaction an acid catalyzed dehydration. Another reagent used along with phosphoric acid is heat, which is often used in acid catalyzed dehydration.1

This experiment provided accurate data of how a mixture of solids, and liquids consisting of both nonpolar and polar substances can be separated using vacuum filtration and water. The separation of oil from the sand, KNO3, and CuSO4 mixture using ethyl acetate was performed using a vacuum filtration. Ethyl acetate is an ester of ethanol and acetic acid with a formula of CH3-COO-CH2-CH3 (Tro, 975). Ethyl acetate is a suitable solvent due to its ability to undergo hydrolysis. Hydrolysis is the breaking apart of chemical bonds with the addition of water. Both oil and ethyl acetate are nonpolar in nature, whereas sand, CuSO4 and KNO3, are polar in nature. This separation of polarity allows for a natural separation of the substances to occur. Nonpolar

General. A liquid-liquid extraction involving and unknown substance dissolved in ethyl acetate was performed using a Separatory Funnel. Ethyl acetate was removed from the organic layer using a Rotory Evaprator, and the remaining organic solid was dried with a High Vacuum Pump. Vacuum filtration with a Buchner funnel was performed to isolate and dry the acidic crystals. Samples of the recovered organic and acidic crystals were melted in a DigiMelt, which reported the temperature oC. Temperatures are uncorrected.

The objective of the experiment was to synthesize a sample of cyclohexene by using an E1 reaction, which involved cyclohexanol.

At Tingalpa creek a number of chemical tests were performed in order to collect data about the health of the waterway. Water temprature,oxygen concentration, PH level, Nitrates/nitrites, phosphorus, salinity and E.coli were tested.

PPV, otherwise known as polyphenylene vinylene are electric conductors that processed into tiny films which emit a bright fluorescent yellow light which could potentially be a replacement for LEDS in electronics. PPV is prepared from p-xylene-bis and the addition of acetonitrile-tetrabutylammonium tetrafluoroborate and from there, the product is treated with heat to eliminate diethyl sulfide, HCL, and ethyl sulfide to form the final product, PPV. Similarly, another method, called direct chemical polymerization, formed PPV but it was only in the form of powder which could not be turned into tiny films for commercial use. In lab, we learned that PPV precursor can be synthesized in a one step reaction from p-xylene using NBs. In the reaction with

In order for reaction to occurs, the LUMO of a certain molecule has to react to a HOMO of the molecules since LUMO accepts electrons whereas HOMO donates electrons. In order for the reactions to be favourable to one another the energy difference between the LUMO of a molecule and the HOMO of another molecule has to be small this will then lead to a formation of a sigma bond between both molecules. This is based on whether the molecules are asymmetrical or symmetrical.

Nitroxoline has been clinically used since 1962 for the treatment of urinary tract infections, especially those caused by gram negative bacilli. The current renewal of nitroxoline is due to its recently found activity against fungi, U. urealyticum, Mycoplasma, and Trichomonas.

Is there a correlation between the mass it takes to submerge 1cm^3 of a material and its density?

In the experiment, our purpose is to determine the ethyl ester in an unknown whiskey. We will be using two methods; the first method is called solid phase extraction(SPE) which will be used to separate ethyl ester from whiskey. SPE is based on the selectivity of stationary phase, it will select our desired ethyl ester to stay in the syringe column, and let other molecules go through the column. The second method is GC-MS method, which will help us to identify each ethyl ester. Gas chromatography is based on the interaction between stationary phase and mobile phase, and mobile phase in this case will be ethyl esters. Different ethyl ester has different interactive ability with stationary phase. The bigger the molecule, the longer it will interact

The scientist investigated the compound 1,3,5-trisilacyclohexane which they assume to exist in chair conformer like cyclohexane. The Silicon atom in the compound has a lower in electronegative and much larger in radius compared to the Carbon atom of cyclohexane making the structure more flexible. The property of silicon atom in the compound also makes the C-Si bond larger and the C-Si-C bond smaller making the structure

An alcohol is composed of a hydroxyl group attached to a saturated carbon atom. Alcohols on a molecular level can be transformed into alkenes. For this reaction to occur, the alcohol must be dehydrated. Alcohols are capable of being transformed under two known reaction mechanisms, E1 and E2. These mechanisms allow for the dehydration of water and the formation of a double bond which is created into a synthesized alkene. The dehydration of an alcohol can occur in one of two ways. The first way is through being acid catalyzed. This reaction occurs when the acid is presented, and interaction is presented between both the acid and the potential leaving group. As known the hydroxy group is unstable, and not a good leaving group, therefore is needed to be protonated for the detachment of the hydroxy group to take place.

In this experiment, dehydration is carried out using cyclohexanol to obtain cyclohexene. This acid-catalysed reaction involves E1 elimination mechanism. The dehydration of alcohol will remove OH- from cyclohexanol to form cyclohexene. Cyclohexene contains a single double bond in the molecule. It is a six carbon aromatic hydrocarbon. Phosphoric acid is mixed with cyclohexanol in the round-bottomed flask and is heated. The phosphoric acid act as a catalyst that increases the rate of reaction but it does not change the overall stoichiometry. The acid catalyst will convert the hydroxyl group into a good leaving group. It is an equilibrium reaction in which the equilibrium is forced to the right (alkene). (Department of Chemistry 2014) Boling chips are added to the distillating flask. If not, the liquid may over boil and shoot out of the