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 (B)</p> Signup and view all the answers

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

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

What is the most stable resonating structure of CH3C?

<p>(A), (B), (C), (D)</p> Signup and view all the answers

Which of the following carbocation would you expect to rearrange?

<p>CH3 (A), CH3 (B), CH3 (C), CH3 (D)</p> Signup and view all the answers

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

<p>FHO (A)</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. (A)</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 (B)</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 (A)</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 (B)</p> Signup and view all the answers

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

<p>Formation of Cl (D)</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 (C)</p> Signup and view all the answers

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

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

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

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

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