Question:

Methyl bromide reacts with $AgF$ to give methyl fluoride and silver bromide. This reaction is called

Updated On: Jun 9, 2024
  • Fittig reaction
  • Swarts reaction
  • Wurtz reaction
  • Finkelstein reaction
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The Correct Option is B

Solution and Explanation

$ {CH3Br +AgF -> CH3F +AgBr}$ This reaction is known as Swarts reaction.
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Concepts Used:

Preparation of Haloalkanes

  1. Preparation by Alcohols: By using alcohol, we can very easily prepare Haloalkane as when R-OH is reacted with a suitable reagent it will form R-X. The following reagents will help in the formation of the reactions:
    1. Halogen Acids (HX)
    2. Thionyl chloride (SOCl2)
    3. Phosphorous halides (PX5 or PX3)
  2. Preparation by Free Radical Halogenation: The formation of alkyl bromides and alkyl chloride is very much possible with the help of free radical halogenation, but as these radicals are highly reactive and non-specific in nature, they can result in the formation of a mixture of products. Though, it's not a preferred method for the preparation of haloalkanes. For example, free radical chlorination can result in the formation of a number of haloalkanes, which in turn makes it difficult to set apart a single product.
  3. Preparation by Alkenes: An electrophilic addition reaction can be used to transform an alkene into a haloalkane as alkene will react with HX to form R-X.

Read More: Haloalkanes and Haloarenes