1 / 17

Question 1

Question 1. Name the alkene below according to the IUPAC system. A) 2-bromo-5-heptane B) 6-bromo-2-heptene C) 2-bromo-5-heptene D) 5-bromo-2-heptene. Question 5. Which alkene can have cis/trans stereoisomers? A) B) C) D). Question 6.

lynn
Télécharger la présentation

Question 1

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Question 1 • Name the alkene below according to the IUPAC system. • A)2-bromo-5-heptane • B)6-bromo-2-heptene • C)2-bromo-5-heptene • D)5-bromo-2-heptene

  2. Question 5 • Which alkene can have cis/trans stereoisomers? • A) B) • C) D)

  3. Question 6 • Of the compounds with the formula C3H5Cl, which one has cis/trans isomers? • A)1-chloropropene • B)2-chloropropene • C)3-chloropropene • D)all of them

  4. Question 22 • Which one of the following groups has the highest rank when precedence is assigned • according to the Cahn-Ingold-Prelog system? • A)-CH2Cl • B)-CH=O • C)-C(CH3)3 • D)CH2NH2

  5. Question 7 • Assign the configuration of the alkenes below as Z or E, respectively. • A) E,E • B) E,Z • C) Z,Z • D) Z,E

  6. Question 8 • Rank the following alkenes in order of decreasing heat of combustion: • A)3 > 1 > 2 • B)2 > 3 > 1 • C)1 > 2 > 3 • D)2 > 1 > 3

  7. Question 3 • What is the major product of the dehydration of 2-methylcyclohexanol? • A)1-methylcyclohexene • B)2-methylcyclohexene • C)3-methylcyclohexene • D)cyclohexene

  8. Question 14 • How many alkenes would you expect to be formed from the E2 elimination of • 3-bromo-2-methylpentane? • A)2 • B)3 • C)4 • D)5

  9. Question 4 • The major product of the dehydration of 1-phenyl-2-propanol is • A) B) • C) D)

  10. Question 10 • What is the major product in the reaction of 2-methyl-2-butanol with H2SO4 at 80°C? • A) B) • C) D)

  11. Question 11 • The reaction of 2-bromobutane with KOCH2CH3 in ethanol produces trans-2-butene. If the concentration of both reactants is doubled, what would be the effect on the rate of the reaction? • A) halve the rate • B) double the rate • C) quadruple the rate • D) no effect on the rate

  12. Question 12 • Which would react with KOCH2CH3 in ethanol faster? • A)cis-2-tert-butylcyclohexyl bromide • B)trans-2-tert-butylcyclohexyl bromide

  13. Question 13 • Which would react with KOC(CH3)3/(CH3)3COH faster? • A)cis-3-tert-butylcyclohexyl bromide • B)trans-3-tert-butylcyclohexyl bromide

  14. Question 18 • Which one of the following best describes a mechanistic feature of the reaction of • 3-bromopentane with sodium ethoxide? • A) The reaction occurs in a single step which is bimolecular. • B) The reaction occurs in two steps, both of which are unimolecular. • C) The rate-determining step involves the formation of the carbocation (CH3CH2)2CH+. • D) The carbon-halogen bond breaks in a rapid step that follows the rate-determining step.

  15. Question 19 • Which of the following statements is false? • A) tert-Butyl alcohol reacts with sodium faster than 1-butanol. • B) tert-Butyl alcohol reacts with hydrogen bromide faster than sec-butyl alcohol. • C) tert-Butyl alcohol undergoes acid-catalyzed dehydration faster than sec-butyl alcohol does. • D) tert-Butyl alcohol undergoes E2 elimination faster than tert-butyl fluoride does.

  16. Question 21 • Which reaction would be most likely to proceed by an E1 mechanism? • A) 2-chloro-2-methylbutane + NaCH2CH3 in ethanol (heat) • B) 1-bromo-2-methylbutane + KOC(CH3)3 in DMSO • C) 2-bromo-2-methylbutane in ethanol (heat) • D) 2-methyl-2-butanol + K

  17. B A A C D A B D D B C A B A C A Answer Key – Chapter 5 C A A D C A B

More Related