In which of these solvents would an SN1 reaction be the fastest? a.100% ethanol b.80% ethanol, 20% water c.50% ethanol, 50% water d.25% ethanol, 75% water e.100% water
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- Use the dropdown menu to indicate whether the rate of the reaction shown below will increase, decrease, or remain the same when the reaction conditions are changed to X or to Y or to Z (see below). NaCN Br CN CH3CN X: Change the leaving group from Br to CI Y: Increase the concentration of haloalkane Z: Increase the concentration of NaCN X: choose your answer... Y: choose your answer... Z: choose your answer... >Which of the following is the best solvent for SN2 reaction? H₂C H₂C. H₂ C. Хот CH₂ CH₂OH H₂O Cyclohexane Methanol Water (nonpolar) (moderatly polar, protic) (polar protic) CH₂ Water Dimethyl sulfoxide Methanol Cyclohexane S. H₂C CH3 Dimethyl sulfoxide (polar aprotic)Of the following halonium (bromonium) ions; Indicate for each one which of the two carbons is more susceptible to being attacked by the nucleophile and explain why. Br+ Br* Br Br X X CH3 CH3 H CH3 H |||4 H H3C... H 114 H H
- Use the dropdown menu to indicate whether the rate of the reaction shown below will increase, decrease, or remain the same when the reaction conditions are changed to X or to Y or to Z (see below). NaN3 'N3 Br CH3CN X: Change the leaving group from Br to CI Y: Increase the concentration of haloalkane Z: Increase the concentration of NaN3 X: choose your answer.. ^ Y: choose your answer... V Z: choose your answer... choose your answer... Remain the same Nex Decrease Increase2. Label the reactions below as Type 1 or Type 2, then complete the ones labeled as Type 2 including a detailed mechanism. HBr Cl₂ H₂O H₂O H₂O H₂SO₂ 1. Hg(OA) 11/0 2. NABH₂4. Rank the following starting materials by their increasing reactivity with HBr (1 = slowest, 4 = fastest) %3D %3D |
- 3. Two reactions are given below. One reaction leads to product and the other does not and the starting material remains unreacted. i) CI NaOCH3 HOCH 3 ii) NaCl OCH 3 HOCH3 a. Draw a complete reaction scheme clearly showing all intermediate products in the space below for the reaction that proceeds to product. b. Draw a reaction coordinate diagram for the forward reaction above from the starting material given to your product showing all intermediates produced along the reaction coordinate. Be sure to label your axes and to think about how the potential energy changes along the reaction coordinate.Answer the following questions regarding the reaction coordinate diagram below. im Reaction Coordinate a. This reaction coordinate diagram is consistent with which mechanism (E1 or E2)? b. What order would the rate expression be for this reaction (i.e first, second, third, zero)? c. Which of the following molecules could NOT be involved in a reaction that had this reaction coordinate diagram (answer a, b, c, or d)? Br a. b. ta CI Br d. C. Br d. This reaction coordinate diagram corresponds to a mechanism with Energy steps.1. Free radicals are generated by subjecting a molecule such as chlorine or bromine gas to A. high temperature conditions. B. photolysis. C. ionizing conditions. D. choices A and B 2. Which of the following radical intermediates is the most stable? q •CF3 A. B. C. D. 3. In the reaction shown below the intermediate that is formed at the fastest rate is Cl₂ A. uv CH, CH₂CHCH₂CH₂CH₂ B. CH, CH.CCH₂CH₂CH, CH₂ C. CH.CHCHCH.CH, D. CH₂ CH₂CHCH₂CHCH
- 11. Order each set of compounds with respect to Sy1 reactivity. (1=lowest, 3=highest) а) H,C CH3 NH2 H3C-C-CI 'CI CH,CH,CHCH3 b) (CH3)3CF (CH3),CBr (CH3),COH c) CH, CH,Br CHBR BrPart A 1. Explain why 1-bromo-2,2-dimethylpropane has difficulty undergoing both SN2 and SN1 reactions. 2. Can it undergo E2 and E1 reactions? Match the words in the left column to the appropriate blanks in the sentences on the right. Make certain each sentence is co Submit can SN1 SN2 secondary tertiary primary E2 hydrogen cannot E1 carbon Previous Answers Request Answer X Incorrect; Try Again; 3 attempts remaining Reset Help 1. The bulky tert-butyl substituent blocks the back side of the carbon bonded to the bromine to nucleophilic attack, making an SN2 reaction difficult. An SN1 reaction cannot occur because it would require the formation of an unstable primary carbocation. 2. It cannot undergo an E2 reaction, because the B-carbon is not bonded to a hydrogen. It cannot undergo an E1 reaction, because that would require the formation of a tertiary carbocation.Are the statements (I-III) true descriptions of the reaction shown? Use the dropdown menu to give your answers. BH3, THF I The reaction does not involve rearrangement IL The reaction is stereospecific III The boron atom acts as a nucleophile I: choose your answer... II: choose your answer... II: choose your answer...