Home
Class 12
CHEMISTRY
Why alkyl halides are generally not prep...

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

Text Solution

AI Generated Solution

**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. ...
Promotional Banner

Topper's Solved these Questions

  • HALOALKANES AND HALOARENES

    MODERN PUBLICATION|Exercise A. MULTIPLE CHOICE QUESTIONS (with only one correct answer)|35 Videos

  • HALOALKANES AND HALOARENES

    MODERN PUBLICATION|Exercise B. MULTIPLE CHOICE QUESTIONS (from competitive Examinations)|63 Videos

  • HALOALKANES AND HALOARENES

    MODERN PUBLICATION|Exercise REVISION EXERCISE (Long Answer Questions)|4 Videos

  • GENERAL PRINCIPLES AND PROCESSES OF ISOLATION OF ELEMENTS

    MODERN PUBLICATION|Exercise COMPETION FILE (Integer Type Numerical Value Type Questions)|5 Videos

  • ORGANIC COMPOUNDS CONTAINING NITROGEN

    MODERN PUBLICATION|Exercise UNIT PRACTICE TEST|5 Videos

Similar Questions

Explore conceptually related problems

phosphine is generally prepared in the laboratory

Phosphine is generally prepared in the laboratory

Which statement is incorrect about free radical halogenation of alkanes ?

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

Read the passage given below and answer the following questions: Alkyl/Aryl halides may be classified as mono, di or polyhalogen compounds depending on one, two or more halogen atoms in their structures. Alkyl halides are prepared by free radical halogenation of alkanes, addition of halogen acids to alkenes and replacement of -OH group of alcohols with halogens using phosphorus halides, thionyl chloride or halogen acids. Aryl halides are prepared by electrophilic substitution to arenes. The following questions are multiple choice questions. Choose the most appropriate answer: Which of the following is halogen exchange reaction ?

Read the passage given below and answer the following questions: Alkyl/Aryl halides may be classified as mono, di or polyhalogen compounds depending on one, two or more halogen atoms in their structures. Alkyl halides are prepared by free radical halogenation of alkanes, addition of halogen acids to alkenes and replacement of -OH group of alcohols with halogens using phosphorus halides, thionyl chloride or halogen acids. Aryl halides are prepared by electrophilic substitution to arenes. The following questions are multiple choice questions. Choose the most appropriate answer: Arrange the following compounds in increasing order of their boiling points. (i)

Read the passage given below and answer the following questions: Alkyl/Aryl halides may be classified as mono, di or polyhalogen compounds depending on one, two or more halogen atoms in their structures. Alkyl halides are prepared by free radical halogenation of alkanes, addition of halogen acids to alkenes and replacement of -OH group of alcohols with halogens using phosphorus halides, thionyl chloride or halogen acids. Aryl halides are prepared by electrophilic substitution to arenes. The following questions are multiple choice questions. Choose the most appropriate answer: Complete the reaction: H_(3)C- Br + AgF to

Read the passage given below and answer the following questions: Alkyl/Aryl halides may be classified as mono, di or polyhalogen compounds depending on one, two or more halogen atoms in their structures. Alkyl halides are prepared by free radical halogenation of alkanes, addition of halogen acids to alkenes and replacement of -OH group of alcohols with halogens using phosphorus halides, thionyl chloride or halogen acids. Aryl halides are prepared by electrophilic substitution to arenes. The following questions are multiple choice questions. Choose the most appropriate answer: Name the major monohalo product following reaction:

Alkyl Halides Preparation

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.