Organic Chemistry: Hydration of Alkynes and Alkenes
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Questions and Answers

What is the result of the hydration of an alkyne in the presence of H2O and HgSO4?

  • Formation of an unstable carbocation
  • No reaction occurs
  • Formation of a ketone through tautomerism (correct)
  • Direct formation of an alcohol
  • Which statement accurately describes the mechanism of alkynes hydration?

  • It is a Markovnikov addition of water to an alkyne (correct)
  • It involves anti-Markovnikov addition of water
  • It results in the formation of alkenes only
  • It follows a free radical mechanism
  • Which of the following compounds is produced when CH3−C≡C−CH3 is hydrated in the presence of HgSO4/H2SO4?

  • 2-pentanol
  • 2-butanol (correct)
  • 3-hexanol
  • Butan-2-ol
  • In the hydration of alkynes, what role does HgSO4 play?

    <p>It serves as a catalyst</p> Signup and view all the answers

    What is the primary product obtained from the reaction R−C≡C−H + H2O?

    <p>An alcohol</p> Signup and view all the answers

    What reagent combination is commonly used for the reductive ozonolysis of alkenes to prepare aldehydes?

    <p>O₃ + CCl₄</p> Signup and view all the answers

    Which of the following products is formed when propene (CH₂=CH-CH₃) undergoes ozonolysis with Zn dust and water?

    <p>Acetaldehyde (CH₃CHO)</p> Signup and view all the answers

    What is the purpose of using Zn dust in the ozonolysis reaction?

    <p>To reduce the ozonide intermediate</p> Signup and view all the answers

    Which of the following reactions does NOT result in the formation of an alkene from aldehydes?

    <p>H₂O + CH₃CHO → CH₂=CH₂</p> Signup and view all the answers

    When 2-pentene (CH₃-CH=CH-CH₂-CH₃) undergoes ozonolysis, which aldehydes will be produced?

    <p>Acetaldehyde and Butyraldehyde</p> Signup and view all the answers

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