Electrophiles
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Questions and Answers

What is an electrophile?

  • A chemical species that accepts an electron pair from a nucleophile (correct)
  • A chemical species that reacts with a Lewis acid
  • A chemical species that reacts with a Lewis base
  • A chemical species that donates an electron pair to a nucleophile
  • Which of the following statements is true about electrophiles?

  • They are Lewis bases
  • They interact with nucleophiles through elimination reactions
  • They can be ranked in order of reactivity using the electrophilicity index (correct)
  • They are optically unstable
  • What is the product of the hydrohalogenation reaction?

  • Alcohol
  • Alkene
  • Alkyl halide (correct)
  • Aldehyde
  • What is the product of the hydration reaction?

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

    What are the common electrophiles in organic syntheses?

    <p>Cations, polarized neutral molecules, oxidizing agents, and Lewis acids</p> Signup and view all the answers

    What is the use of nitromethane in racing cars and model engines?

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

    What is the chemical formula of fluorosulfuric acid?

    <p>HSO3F</p> Signup and view all the answers

    What is the difference between gitionic and distonic superelectrophiles?

    <p>Gitionic superelectrophiles have charged centers separated by no more than one atom, while distonic superelectrophiles have charged centers separated by 2 or more atoms.</p> Signup and view all the answers

    What is the role of F-TEDA-BF4?

    <p>A distonic superelectrophile</p> Signup and view all the answers

    What is the role of nitronium tetrafluoroborate in the nitration of nitromethane?

    <p>A distonic superelectrophile</p> Signup and view all the answers

    Study Notes

    • An electrophile is a chemical species that accepts an electron pair from a nucleophile.
    • Electrophiles are Lewis acids because they accept electrons.
    • Electrophiles interact with nucleophiles through addition and substitution reactions.
    • Common electrophiles in organic syntheses include cations, polarized neutral molecules, oxidizing agents, and Lewis acids.
    • Hydrogen halides add to alkenes to give alkyl halides in hydrohalogenation.
    • The hydration reaction adds a molecule of water to a molecule of ethene and produces ethanol.
    • Chiral electrophiles are optically stable and can be used in enantioselective reactions.
    • Electrophilicity index is a method to rank electrophiles in order of reactivity.
    • Superelectrophiles are cationic electrophilic reagents with greatly enhanced reactivities in the presence of superacids.
    • Electrophiles are important in organic chemistry and have many industrial applications.
    • Nitromethane can be nitrated with nitronium tetrafluoroborate only in presence of a strong acid like fluorosulfuric acid.
    • The nitration occurs via the protonated nitronium dication.
    • Gitionic superelectrophiles have charged centers separated by no more than one atom.
    • Distonic superelectrophiles have charged centers separated by 2 or more atoms.
    • The protonitronium ion is an example of a gitionic superelectrophile.
    • F-TEDA-BF4 is an example of a distonic superelectrophile.
    • The nitronium tetrafluoroborate used for nitration is a distonic superelectrophile.
    • Nitromethane is a colorless, oily liquid with a slightly sweet odor.
    • Nitromethane is used as a fuel in racing cars and model engines.
    • Fluorosulfuric acid is a strong acid with the chemical formula HSO3F.

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    Description

    Test your knowledge of electrophiles and their reactions with this quiz. From understanding the definition of electrophiles to identifying common examples and their reactivities, this quiz covers a wide range of topics. You'll also learn about superelectrophiles and their unique properties, as well as the industrial applications of electrophiles. Whether you're a chemistry student or simply interested in the subject, this quiz is a great way to challenge yourself and expand your knowledge of organic chemistry.

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