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Q1) Which compound will undergo SN1 reaction fastest? CI Cl Q2) What is true about SN1...
20) Which of the following statements is true about SN1 reactions of alkyl halides? A) The...
20) Which of the following statements is true about SN1 reactions of alkyl halides? A) The reactions are favored by polar solvents. B) The reaction occurs via a one-step back-side attack. C) Complete inversion of configuration occurs. D) Reaction rates depend only on the concentration of the nucleophile. E) The reactions are favored by nonpolar solvents.
Chem 233 Exam III (A) October 28, 2019 Page 7 14. Which of the following would...
Chem 233 Exam III (A) October 28, 2019 Page 7 14. Which of the following would an of the following would be the best base for performing the following elimination? A KOCHA B. KOCH(CH) C. KOC(CH.) D. this reaction is not an elimination reaction 15. Which of the following statements is (are) true of Sul reactions of alkyl halides in general? A) The rate of an SNI reaction depends on the concentration of the alkyl halide. B) The rate of...
Consider the SN2 reaction of butyl bromide with hydroxide ion , Assuming no other changes, what...
Consider the SN2 reaction of butyl bromide with hydroxide ion , Assuming no other changes, what effect on the reaction rate would result from simultaneously doubling the concentrations of both butyl bromide and hydroxyl ion No effect (B)It would double the rate (C)it would increase the rate six times (D) It would increase the rate four times. 2. Which alky halide would you expect to undergo SN1 hydrolysis most rapidly? (A) (CH3)3C-I (B) (CH3)3C-Br (C) (CH3)3C-Cl (D) (CH3)3C-F 3....
can someone show me how to do the work and explain it to me 12. Which...
can someone show me how to do the work and explain it to me
12. Which of the following does not correctly describe Sn2 reactions of alkyl halides? Tertiary halides react faster than secondary halides. Rate of reaction depends on the concentrations of both the alkyl halide and the nucleophile. The mechanism consists of a single step with no intermediates. The transition state species has a pentavalent carbon atom.
28) The reaction of tert-butyl bromide, (CH,)CBr, with ethanol affords the substitution product tert-butyl ethyl ether,...
28) The reaction of tert-butyl bromide, (CH,)CBr, with ethanol affords the substitution product tert-butyl ethyl ether, (CH)1COCH CH, in acidic conditions. What would happen to the rate of the reaction if the concentration of ethanol was doubled? A) The rate remains the same. B) The rate decreases by a factor of 2 C) The rate increases by a factor of 2. D) The rate increases by a factor of 4. Circle the following alkyl halide that will undergo the fastest...
17. Which of the following statements is true? A. An Sw1 reaction always proceeds faster than...
17. Which of the following statements is true? A. An Sw1 reaction always proceeds faster than an S2 reaction. B. An Sw2 reaction is not stereospecific C. Good alkyl halide substrates for an E1 reaction are also good for an E2 reaction. D. Increasing the alkyl halide concentration enhances the reaction rate of an Sw1 reaction but not that of an E2 reaction. 18. For the following reaction, what happens to the reaction rate if the concentration of NaN, is...
Select which compound is the most reactive in an SN1 reaction Br Select one: O III...
Select which compound is the most reactive in an SN1 reaction Br Select one: O III Assuming no other changes, what is the effect of doubling both the alkyl halide and the nucleophile concentrations in the reaction below? for OH 79 + HB Select one: O a quadruples the rate b. triples the rate c. doubles the rate O d. no change e. rate is halved B. Select which compound is the most reactive in an SN 1 reaction Sel...
Alkyl halides may undergo elimination reactions with BrØnstead-Lowry bases in which the halide and an adjacent...
Alkyl halides may undergo elimination reactions with BrØnstead-Lowry bases in which the halide and an adjacent proton are lost to form a new π bond. Because of the loss of a proton and a halide anion the reactions are termed ‘dehydrohalogenation’. The two most common associated mechanisms are designated as either unimolecular (E1) or bimolecular (E2) elimination reactions based on reaction rate studies. E1 reactions proceed via a two-step mechanism that involves the cleavage of the leaving group (here the...
7. Which of the following statements is (are) true about a reaction that follows an Sul...
7. Which of the following statements is (are) true about a reaction that follows an Sul mechanism? A. The reaction is fastest with primary alkyl halides. B. The reaction exhibits a one-step mechanism. C. The reaction rate increases as the leaving group ability increases. D. The reaction rate increases as the strength of the nucleophile increases. E. Statements (The reaction rate increases as the leaving group ability increases) and (The reaction rate increases as the strength of the nucleophile increases)...
Alkyl halides may undergo elimination reactions with BrØnstead-Lowry bases in which the halide and an adjacent...
Alkyl halides may undergo elimination reactions with BrØnstead-Lowry bases in which the halide and an adjacent proton are lost to form a new π bond. Because of the loss of a proton and a halide anion the reactions are termed ‘dehydrohalogenation’. The two most common associated mechanisms are designated as either unimolecular (E1) or bimolecular (E2) elimination reactions based on reaction rate studies. E1 reactions proceed via a two-step mechanism that involves the cleavage of the leaving group (here the...
20) Which of the following statements is true about SN1 reactions of alkyl halides? A) The reactions are favored by polar solvents. B) The reaction occurs via a one-step back-side attack. C) Complete inversion of configuration occurs. D) Reaction rates depend only on the concentration of the nucleophile. E) The reactions are favored by nonpolar solvents.
Chem 233 Exam III (A) October 28, 2019 Page 7 14. Which of the following would an of the following would be the best base for performing the following elimination? A KOCHA B. KOCH(CH) C. KOC(CH.) D. this reaction is not an elimination reaction 15. Which of the following statements is (are) true of Sul reactions of alkyl halides in general? A) The rate of an SNI reaction depends on the concentration of the alkyl halide. B) The rate of...
can someone show me how to do the work and explain it to me
12. Which of the following does not correctly describe Sn2 reactions of alkyl halides? Tertiary halides react faster than secondary halides. Rate of reaction depends on the concentrations of both the alkyl halide and the nucleophile. The mechanism consists of a single step with no intermediates. The transition state species has a pentavalent carbon atom.
28) The reaction of tert-butyl bromide, (CH,)CBr, with ethanol affords the substitution product tert-butyl ethyl ether, (CH)1COCH CH, in acidic conditions. What would happen to the rate of the reaction if the concentration of ethanol was doubled? A) The rate remains the same. B) The rate decreases by a factor of 2 C) The rate increases by a factor of 2. D) The rate increases by a factor of 4. Circle the following alkyl halide that will undergo the fastest...
17. Which of the following statements is true? A. An Sw1 reaction always proceeds faster than an S2 reaction. B. An Sw2 reaction is not stereospecific C. Good alkyl halide substrates for an E1 reaction are also good for an E2 reaction. D. Increasing the alkyl halide concentration enhances the reaction rate of an Sw1 reaction but not that of an E2 reaction. 18. For the following reaction, what happens to the reaction rate if the concentration of NaN, is...
Select which compound is the most reactive in an SN1 reaction Br Select one: O III Assuming no other changes, what is the effect of doubling both the alkyl halide and the nucleophile concentrations in the reaction below? for OH 79 + HB Select one: O a quadruples the rate b. triples the rate c. doubles the rate O d. no change e. rate is halved B. Select which compound is the most reactive in an SN 1 reaction Sel...
7. Which of the following statements is (are) true about a reaction that follows an Sul mechanism? A. The reaction is fastest with primary alkyl halides. B. The reaction exhibits a one-step mechanism. C. The reaction rate increases as the leaving group ability increases. D. The reaction rate increases as the strength of the nucleophile increases. E. Statements (The reaction rate increases as the leaving group ability increases) and (The reaction rate increases as the strength of the nucleophile increases)...
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