Organic Chemistry Reaction Mechanisms
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Questions and Answers

Which of the following is the correct decreasing order of enthalpies of reaction for producing carbocation?

  • ΔH10 > ΔH02 > ΔH30 > ΔH04 (correct)
  • ΔH02 > ΔH10 > ΔH04 > ΔH30
  • ΔH04 > ΔH10 > ΔH02 > ΔH30
  • ΔH30 > ΔH02 > ΔH10 > ΔH04

    • What is the correct stability order of the given species?

  • II > I > IV > III
  • I > II > III > IV
  • II > IV > I > III (correct)
  • I > III > II > IV

    • Which carbocation is least likely to form as an intermediate?

  • (C6H5)3C+
  • CH2=CH+
  • CH3+ (correct)
  • None of these

    • What is the correct order of stability of the following carbanions?

    <p>II &gt; III &gt; IV &gt; I</p> Signup and view all the answers

    Which of the following reaction intermediates has the least potential energy?

    <p>(C3H2)3C+</p> Signup and view all the answers

    What is the most stable resonating structure of CH3C?

    Signup and view all the answers

    Which of the following carbocation would you expect to rearrange?

    <p>CH3</p> Signup and view all the answers

    In which of the following compounds is the hydroxylic proton most acidic?

    <p>FHO</p> Signup and view all the answers

    Which of the following statements is true about the +I effect?

    <p>It increases the stability of a carbocation.</p> Signup and view all the answers

    How many of the following carbocations have the potential to rearrange to a more stable one?

    <p>4</p> Signup and view all the answers

    What is the correct order of decreasing stability of the following carbanions?

    <p>I &gt; II &gt; III &gt; IV</p> Signup and view all the answers

    What is the number of monobrominated products obtained from the reaction of alkane with Br2 and hν?

    <p>6</p> Signup and view all the answers

    In the free-radical chlorination of methane, what is the chain-initiation step?

    <p>Formation of Cl</p> Signup and view all the answers

    Arrange the following compounds in the increasing order of homolytic (C―C) bond dissociation energy.

    <p>I &lt; III &lt; II &lt; IV</p> Signup and view all the answers

    What is the rate-determining step in the chlorination of CH4?

    <p>Formation of Cl2</p> Signup and view all the answers

    How many monochlorinated products may be obtained when the alkane shown below reacts in the presence of Cl2 and hν?

    <p>2</p> Signup and view all the answers

    Wurtz reaction will not be observed in which of the following compounds?

    <p>None of these</p> Signup and view all the answers

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