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Why alkyl halides are generally not prep...

Why alkyl halides are generally not prepared in the laboratory by free radical halogenation of alkanes?

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**Step-by-Step Solution:** 1. **Understanding Free Radical Halogenation:** Free radical halogenation is a reaction where alkanes react with halogens (like Cl2 or Br2) in the presence of light or heat to form alkyl halides. This process involves the formation of free radicals. 2. **Initiation of the Reaction:** When chlorine gas (Cl2) is exposed to light, it undergoes homolytic cleavage to form two chlorine radicals (Cl•). This is the initiation step of the free radical halogenation process. ...
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Alkyl Halides Preparation

The alkyl halides that can be made by free radical halogenation of alkanes are :

Knowledge Check

  • phosphine is generally prepared in the laboratory

    A
    By heating phosphorus in a current of hydrogen
    B
    By heating white phosphorus with aqueous solution of caustic potash
    C
    By decomposition of `P_(2)H_(4)` at `110^(@)C`
    D
    `By heating red phosphorus with an aqueous solution of caustic soda

  • Phosphine is generally prepared in the laboratory

    A
    By heating phosphorus in a current of hydrogen
    B
    By decomposition of `P_(2)H_(4)` at 110
    C
    By heating red phosphorus with an aquesous solution of caustic soda
    D
    By heating white phosphors with caustic potash

  • Which statement is incorrect about free radical halogenation of alkanes ?

    A
    The number of product molecules formed by one photon is very high.
    B
    If `O_(2)` is added , initially the rate of reaction decreases, then increases.
    C
    Inhibitors combine with free radical and terminate the chain reaction.
    D
    Presence of `C_(6)H_(5)-underset(O)underset(||)(C )O-underset(O)underset(||)(OC)-C_(6)H_(5)` inhibits the free radical reaction.

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