Organic Reaction Mechanisms Quiz
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Questions and Answers

In nucleophilic substitutions, alkyl halides are classified as:

  • Primary (1°), secondary (2°), or tertiary (3°) based on the number of carbon groups directly bonded to the carbon bearing the halogen atom (correct)
  • Primary (1°) only
  • Secondary (2°) or tertiary (3°) only
  • Primary (1°) or quaternary (4°)

    • Which species is commonly involved as a nucleophile in substitution reactions?

  • Species with a positive charge
  • Species with no charge
  • Species with a negative charge
  • Species with lone pairs of electron (fully or partially negative charge) (correct)

    • What makes H2O a better leaving group than HO:¯?

  • H2O has a positive charge
  • H2O is a weaker base (correct)
  • H2O is more electronegative
  • H2O is a stronger base

    • What do nucleophiles and bases have in common?

    <p>Both have a lone pair or a π bond</p> Signup and view all the answers

    What are the common leaving groups in nucleophilic substitution reactions?

    <p>Br, Cl, I</p> Signup and view all the answers

    In a nucleophilic substitution reaction, the leaving group departs with the electron pair in the C—X bond, forming X:¯. The leaving group's ability to accept an electron pair is influenced by its __________.

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

    What type of alkyl halide is directly bonded to a carbon atom carrying the halogen atom?

    <p>Primary (1°)</p> Signup and view all the answers

    Which species is attracted to a region of positive charge and is commonly involved as a nucleophile in substitution reactions?

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

    What differentiates nucleophiles from bases?

    <p>Type of atom they attack</p> Signup and view all the answers

    What characteristic of H2O makes it a better leaving group than HO:¯?

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

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