8- What is the fur 1 (CHs CBr b- 3-bromo-3-methylpropane d- 2-bromo-3-methylprop

Question

8- What is the fur 1 (CHs CBr b- 3-bromo-3-methylpropane d- 2-bromo-3-methylpropane a- 2-bromo-2-methylpropane c- 4-bromo-2-methylpropane 9-Which alkyl halide is expected to react the fastest under SN1 conditions? a) (CHshCI b) (CH)hCBr c) (CHs CCI d) (CH) CF e) all react at the same rate. 10-) Based on Saytzefs rule, select the most stable alkene. A) 1-methylcyclohexenc C14-methylcyclohexene 11) The expected Markovnikov addition product of HI to 2-methyl-2-butene is: A) 2-iodopentane B) 2-iodo-2-methylbutane C) 1-iodo-2-methylbutane D) 2-iodo-1-methylbutane E) 3-iodo-2-methylbutane 12) Which of the following alkyl halides gives the slowest SN; reaction? B) 3-mcthyleyclohexenc D) They are all of equal stability CHaCHCHCH3 A) CH CH C B- C- 13-What is the major product in the reaction of HBr with (CHs)hCCH? a- 2-Methylpentane c-1-Bromo-2-methylpropane e-1,2-Dibromo-2-methylpropane 14-Which of the following halides will react most rapidly in a Sx2 reaction? b-2-Bromo-2-methylpropane d- Equal amounts of C and D a-CH,F b- CH3C1 c- CH3Br d- CH3I 15- The relative order of carbocation stability is? a-1o> 2o> 3 b-lo 30> 20 c-20>1o>30 d-2o> 3o lo e-30> 20>10 16- Inversion at chiral carbon(Walden inversion) will appear in a-El b- SN1 c-E2 d-SN2 17-A concerted reaction is one where? a-Multiple reagents react in a series of steps. b-The reaction occurs in a single step. c-There is a large activation energy barrier to the reaction. d-There is no activation energy barrier to the reaction.

Explanation / Answer

Q8. Correct answer is (a) 2-bromo-2methylpropane

Q9. Correct answer is (a) (CH3)3CI

Q10. Correct answer is (A) 1-methylcyclohexene

Q11. Correct answer is (B) 2-iodo-2-methylbutane

Q12. Correct answer is (C)

Q13. Correct answer is (b) 2-bromo-2methylpropane

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