Organic Test

23 Questions  I  By Mgaines
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1.  Which of the following is true for the initiation step of a free radical chloroniation reaction?
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2.  Which of the following reactive intermediates can best be descibed as both nucleophilic and strongly basic?
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3.  ______ is the study of reaction rates.
4.  Which of the following is a carbene?
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5.  Which of the following correctly lists the conformations of cyclohexane in order of increasing energy?
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6.  Which of the following statements is(are) true for the compound (R)-butanol?
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7.  Provide two  circumstances under which solvolysis of chiral alkyl halide would not result in the generation of a mixture of enantiomeric products. 
8.  Which of the following best describes DDT?
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9.  Which alkanes have largely replaced Freons as propellants in aerosol cans?
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10.  In the first propagation step of the free radical chlorination of methane, which of the following occurs?
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11.  Given the chloronation of acetone sown below, choose the correct rate law.   CH3COCH3 + Cl2 ® CH3COCH2Cl + HCl
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12.  Which of the following statements correctly describe(s) E1 reactions of alkyl halides (RX)?I.    Rate= k[base]II.   Rate= k[base][RX]III.  Rate= k[RX]IV. The reactions occur in twwo or more distinct steps.V.  Rearrangements are sometimes seen.     A) III and V           B) II and IV           C) I,IV, and V          D) I only      E) III,IV, and V
13.  The major product from the reaction of 2-chloro-2-methylpentane with sodium ethoxide in ethanol results from which of the following mechanistic pathways?
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14.  What term describes the structural relationship between (E)- and (Z)-2-pentene?
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15.  Which of the following is a vicinal dihalide?
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16.  Which of the compounds below undergoes solvolysis in aqueous ethanol most rapidly?
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17.  The bond dissociation energy is the amount of energy required to break a bond_____.
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18.  When ioniztion occurs at the single sterocenter of a chiral compound, the resulting carbocation is:
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19.  Which of the following statements is(are) true for the compound (3R, 4R)-3,4-dimethylhexane?
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20.  Which of the following statements correctly pertains to a pair of enantiomers?
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21.  Which of the following correctly expressed the standard Gibbs free energy change of a reaction in terms of the changes in enthalpy and entropy?
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22.  How many carbons do the primary alkane constituents of gasoline contain?
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23.  What term describes the structural relationship between cis-1,2-dimethylcyclopentane and trans- 1,3-dimethylcyclopentane?
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