Naming Dibromophenols Quiz
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Questions and Answers

What is the common physical property of benzene and most alkylbenzenes?

  • Strong hydrogen bonding
  • Soluble in water
  • Oily-smelling colorless liquids (correct)
  • Highly polar
  • Which of the following is a correct statement about naphthalene's physical state at room temperature?

  • It is a gas
  • It is a liquid
  • It is a solid (correct)
  • It is a supercritical fluid
  • What is the role of the delocalized π bond in benzene concerning its reactivity?

  • Enhances hydrogen bonding
  • Forms covalent bonds with electrophiles
  • Repels electrophiles
  • Attracts and reacts with electrophiles (correct)
  • What is the correct name for 2,3-dibromophenol when the benzene ring acts as a substituent on an alkyl or alkenyl chain?

    <p>2,3-dibromophenyl</p> Signup and view all the answers

    Which statement accurately describes the boiling points of benzene and its alkyl derivatives?

    <p>Benzene has a higher boiling point than equivalent cycloalkanes</p> Signup and view all the answers

    What type of intermolecular bonding is responsible for the solubility of benzene and alkylbenzenes in non-polar solvents like cyclohexane?

    <p>Van der Waals' forces</p> Signup and view all the answers

    What effect does the methyl group have on the electron density in the C-H bond?

    <p>Increases the electron density</p> Signup and view all the answers

    In electrophilic substitution, which position does a substituent prefer if it favors 3-substitution in methylbenzene?

    <p>3-position</p> Signup and view all the answers

    Compared to cyclohexylamine, how does the basicity of phenylamine compare?

    <p>Phenylamine is a million times less basic</p> Signup and view all the answers

    What is the most significant difference in basicities between phenylamine and alkyl amines?

    <p>Alkyl amines are more basic</p> Signup and view all the answers

    In halogenobenzenes, which atom's lone pair of electrons influences the reactivity during nitrations?

    <p>Nitrogen atom in phenylamine</p> Signup and view all the answers

    How do the reactions of halogenobenzenes compare to those of benzene?

    <p>Reactions are similar to those of benzene</p> Signup and view all the answers

    Which of the following statements about methylbenzene (toluene) is correct?

    <p>The methyl group increases the electron density in the aromatic ring, making it more reactive towards electrophiles.</p> Signup and view all the answers

    In the chlorination of methylbenzene, what is the major product formed?

    <p>A mixture of 2-chloromethylbenzene and 4-chloromethylbenzene</p> Signup and view all the answers

    What is the mechanism of the chlorination reaction of methylbenzene?

    <p>Electrophilic substitution</p> Signup and view all the answers

    Which of the following statements about the methyl group in methylbenzene is correct?

    <p>The methyl group is a 2,4-directing group.</p> Signup and view all the answers

    What happens when methylbenzene is reacted with a strong oxidizing agent like potassium permanganate (KMnO4) or chromic acid (H2CrO4)?

    <p>The methyl group is oxidized to an aldehyde group.</p> Signup and view all the answers

    Which of the following statements about alkylbenzenes is correct?

    <p>Alkylbenzenes are more reactive than benzene in electrophilic aromatic substitution reactions.</p> Signup and view all the answers

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