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- Chemistry Provide plausible mechanism for the following reaction1. For the rearrangement of cyclopropane to propene at 500°C, the following data have been obtained: [(CH2)3], M (CH2), CH,CH=CH2 2.98 x10- 5.55 x10-2 1.60 x10- 8.56x10-3 time, min 15.5 31.0 46.5 What is the rate of disappearance of (CH2); over the time period from 0 to 15.5 minutes? 1. a. 0.00166 M/min b. 0.00127 M/min 0.00101 M/min d. 0.000890 M/min e. 0.000480 M/min C.How many acid-base steps occur in this mechanism? :OH fö OH ₂ H CI: -H₂O (C5H12O) (CsH3O*) :CI: :CI:- yox (C5H1*) (C5H₁1CI)
- 7. What is the effect of doubling the concentration of both the alkyl halide and the alcohol in the following S1 reaction: (CH₂) CBr + CH₂OH (A) No change in the rate. (B) Doubles the rate. (C) Triples the rate. (D) Quadruples the rate. (E) None of the (A) to (D) choices is correct. (CH3),COCH, + HBr46. The Strength of Nucleophile: Which one is the strongest nucleophile? OH (B) 0-CH, -CH, (D) O (C) O (A) O (D) O (B)Write the mechanism for the following reaction: `Br ELOH Write the mechanism and predict if the reaction above be faster or slower than the following reaction? Explain. Br ELOH
- 10. practice q 10 Compound Free Energy HO A A reacts with B in the presence of sodium hydride to give C as a major product. NH₂ Ph B ŌSO₂CF3 NaH, THF a) Provide a detailed mechanism for the formation of C and draw it in the box above. ( C b) Draw the reaction coordinate diagram of that reaction. Indicate with an arrow the rate- determining step of the reaction then draw its transition state: Reaction Coordinate c) The reaction rate observed was 5 x 10-2 M.s¹ when the concentrations of A and B were 0.2 M and 0.1 M respectively. Determine the rate of this reaction when the concentration of A and B are now 0.3 M and 0.2 M respectively. Show your work.10. practice q 10 Compound A reacts with B in the presence of sodium hydride to give C as a major product. HO Free Energy A NH₂ + Ph ŌSO₂CF3 B NaH, THF a) Provide a detailed mechanism for the formation of C and draw it in the box above. C b) Draw the reaction coordinate diagram of that reaction. Indicate with an arrow the rate- determining step of the reaction then draw its transition state: Reaction CoordinateSketch the reaction mechanism (including the final product) corresponding to the following description. Be prepared to explain the mechanism to your partner. 2-bromo-4-methylpentane is being reacted with sodium cyanide in diethyl ether (set up the reaction – next you will get a description of the mechanism to draw). A lone pair of electrons from the cyanide attacks the carbon bonded to bromine, forming a new carbon-carbon bond. At the same time, the carbon-bromine bond breaks with the electron pair from the carbon-bromine bond moving toward the bromine to form a bromide ion. This will form the product 2,4-dimethylpentanenitrile and sodium bromide. is this reaction following an SN1 or SN2 mechanism? Write out the rate law for this reaction.Draw a reaction coordinate diagram for this reaction.
- Predict the main mechanism that occur for the following reaction Br EtO E:OH, 50 "C E1 E2 SN2 SN1 No reaction will occurCan you do 5,6,7 and explain it? State the mechanism in which through reaction proceeds sn2 or sn1 and can you explain the process of the mechanism3) Fill in the red box(es) with the missing reactant(s), reagent(s), product(s), solvent, and/or conditions and write a reasonable mechanism for the reaction. Not every box needs to be used and not every box necessarily corresponds to only a single species. If no reaction occurs OR no reagents exist to perform the reaction state, “NOT POSSIBLE” AND explain why. H₂O*