Lab Report 4

Industrial chemistry: Provide a mechanism for the hydrocracking of n-Heptane in the presence of hydrogen gas to isopentane and ethane.

The deuterium kinetic isotope effect for the halogenation of an alkane is defined in the following equation, where X. = Cl. or Br.       Predict whether chlorination or bromination would have a greater deuterium kinetic isotope effect.

(a) When 3-bromo-2,3-dimethylpentane, (CH3)CH2CBr(CH3)CH2CH 3, reacts with aqueous potassiumhydroxide, an alcohol is formed.(i) Name the type of reaction taking place and give the role of the reagent.Type of reaction ...............................................................................................Role of reagent .................................................................................................(ii) Outline a mechanism for the reaction, showing clearly the structure of the alcohol formed. (b) When 3-bromo-2,3-dimethylpentane reacts with ethanolic potassium hydroxide, three structurallyisomeric alkenes are formed.(i) Name the type of reaction taking place and give the role of the reagent.Type of reaction ...............................................................................................Role of reagent .................................................................................................(ii) One of the reaction products is…

The PCC (1-piperidinocyclohexane carbonitrile) content of a clandestinely synthesized PCP (phencyclidine) sample can be determined by precipitating and weighing the product: PCC + Phenylmagnesium Bromide → PCP MW = 186.258 g/mole MW = 181.31 g/mole MW 243.387 g/mole In one analysis, 0.702 g of sample was dissolved in 25 mL of cylcohexanone and 1 g of phenylmagnesium bromide was added. After 25 minutes, the precipitate was filtered, washed with acetone, dried at 110°C, and found to weigh 0.869 3 grams. Find the recovery in wt% of PCC in the sample. In another analysis, the same sample was found to contain 5.17% of another impurity. What is the separation factor of this impurity in relation to PCC?

Subject: Organic Chemistry Topic: Synthesis of Aspirin Question: Show the reaction scheme and mechanism in the synthesis of aspirin.

ASAP Predict the product/products of the reaction. Justify your answer and show the mechanism

Under strongly acidic conditions, hexane is observed to undergo an isomerization process, during which it is converted into branched alkanes having the same molecular formula as hexane (C6H₁4). The rate at which each constitutional isomer is produced is related to the type of acid that is used in the reaction and the degree of mixing that occurs during the reaction (J. Chem. Soc., Perkins Trans. 2 1999, 12, 2715-2718). Step 1 Draw a bond-line structure of hexane. Draw Your Solution There are four branched isomers of hexane. Draw bond-line structures of all four of its isomers. Draw Your Solution

Can you show the reaction mechanism step-by-step for  C₃H₈O (l)  → C3H6 (g) + H2O (l) propan-1-ol    →    propene + water Please show the electron movement and the way in which the bonds break. Can you please also show how many bonds there are and what type they are (eg. Sigma, Pi)? Thanks.

1) Hydrolysis of Methyl Salicylate: Methyl Salicylate (C8H8O3) + sodium Hydroxide (NaOH) -> sodium Salicylate ( NaC7H5O3) + Methanol (CH3OH) 2) Acidification of Sodium Salicylate: Sodium salicylate (NaC7H5O3) + HCL -> Salicylic acid (C7H603) + sodium chloride (NaCL) Could you find the theoretical yield for me? 2.15g of methyl salicylate was used. 25ml of sodium hydroxide (2m solution) was used for hydrolysis and 2ml of hydrochloric acid was used for the acidification. This produced a yield of 1.53g of salicylic acid.

i WANT THE MECHANISM FOR THIS REACTION ∙ogo.00×— ggo vii. -N3 hv

Ethers can be prepared by reaction of an alkoxide or phenoxide ion with a primary alkyl halide. Draw the structure of the expected organic product of the reaction of iodomethane with the following alkoxide ion: CH3 H3C O Na You do not have to consider stereochemistry. You do not have to explicitly draw H atoms. • Do not include lone pairs in your answer. They will not be considered in the grading. • Do not include counter-ions, e.g., Na", I, in your answer. орy вste ChemDoodle

"A research team synthesizes a novel organic compound 'X' with the molecular formula C5H8O2. When 'X' is treated with a deuterated acid (D2O), a single deuterium atom replaces a hydrogen atom, forming compound 'Y' (C5H7DO2). 'X' does not react with 2,4-Dinitrophenylhydrazine (2,4-DNP) but does react with both Tollens' reagent and Benedict's solution, forming a silver mirror and a red precipitate, respectively. Furthermore, 'X' undergoes catalytic hydrogenation over a palladium catalyst, consuming one mole of hydrogen to form a compound 'Z' (C5H10O2). Based on these observations, what is the most likely structure of compound 'X'?" A. Methyl vinyl ketone B. 3-Buten-2-one C. Acetoacetic ester D. 2-Hydroxypent-3-enal

List the requested biological classification or organic functional group(s) for the reactant, predict the reaction type, and predict the product(s) classification or functional group(s). Use the information to draw the major product(s)

Dehydration of 2-Methylcyclohexanol underlies the Evelyn effect, which is defined as the phenomena in which the product ratios in a chemical reaction change as the reaction proceeds. Rationalize this observation.

CANNOT BE HAND-WRITTEN

Why does the dehydration of an alcohol more often use concentrated sulfuric acid,  H2SO4H2SO4, as the acid catalyst rather than dilute hydrochloric acid, HCl?   Select one or more:   Hydrochloric acid is too small to effectively react with the alcohol in the reaction.   The additional water solvent from a dilute solution could reverse the dehydration reaction.   Only acids with more than one proton can complete the dehydration reaction.   The presence of the chloride ion could result in a competing substitution reaction.

CO -110.5 -137.2 197.9 (g) Co2 -393.5 -394.4 213.6 (g) Hydrogen 130.58 9) Охудen 02 205.0 (g) H20-285.83 -237.13 69.91 (1) The value of AS° for the catalytic hydrogenation of acetylene to ethene, C2H2 (g) + H2 (g) → C2H4 (g) is J/K• mol. Select one: O A. +18.6 B. +112.0 С.-112.0 D. -18.6 O E. +550.8

rate constants for the decomposition of an unstable cis-azoalkane are given below. -20.73 2.31 T (°C) k (10-4 s¹) -24.82 1.22 -17.02 4.39 -13.00 8.50 Calculate the enthalpy, entropy, and free energy of activation at -20.00 °C. -8.95 14.3

A student reacts 2-pentene with H2(g) and chooses iron (Fe) as his catalyst. Identify the outcome the student will get from this reaction.

Draw the structure of the organic product of the reaction between cyclohexene and H2SO4, H2O.   Use the wedge/hash bond tools to indicate stereochemistry where it exists. Separate multiple products using the + sign In cases where there is more than one answer, just draw one.  Please make your answer clear. I did not understand the first answer because it was hand -written

A student attempted to prepare 1-chlorobutane by mixing 1-butanol with NaCl in acetone. Was the student succesful? Explain.

Describe an experiment you will carry out and the result that you will expect to distinguish between the following: Ethanol (Alcohol) 1-bromoethane (Halogenoalkane) Ethanal (aldehyde) Carry out your experiment and identify substances X, Y and Z. The unknown substances provided are Ethanol, 1-bromoethane and Ethanal.

The reaction between peroxodisulphate (VI) ions, S2O82- and iodide ions, I- can be catalyzed by iron(III) ions, Fe3+. Suggest a mechanism for the catalytic reaction.