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In both alkyl halides, The halogen atom ...

In both alkyl halides, The halogen atom is attached directly to the carbon atoms. They are expected to exhibit similar reactivity. However,aryl halides are comparatively little reactive, particularly towards nucleophilic substitution reactions. For example, hydrolysis of ethyl chloride takes place by simple boiling with aqueous KOH. On the other hand, the alkaline hydrolysis of chlorobenzene needs a very high temperature (623 K) as well as very high pressure
Among the following, which has weakest C-X bond

A

benzyl bromide

B

Bromobenzene

C

Vinyl bromine

D

ethyl bromide

Text Solution

Verified by Experts

The correct Answer is:
A
`C_(6)H_(5)CH_(2)-Br` has weakest C-X. bond as `C_(6)H_(5)overset(o+)(C )H_(2)` ion is easily resonance stabilized. More over C-Br can cleave most easily.
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In both alkyl halides, The halogen atom is attached directly to the carbon atoms. They are expected to exhibit similar reactivity. However,aryl halides are comparatively little reactive, particularly towards nucleophilic substitution reactions. For example, hydrolysis of ethyl chloride takes place by simple boiling with aqueous KOH. On the other hand, the alkaline hydrolysis of chlorobenzene needs a very high temperature (623 K) as well as very high pressure The halide which does not give any precipitate when warmed with alcoholic AgNO_(3) solution is

In both alkyl halides, The halogen atom is attached directly to the carbon atoms. They are expected to exhibit similar reactivity. However,aryl halides are comparatively little reactive, particularly towards nucleophilic substitution reactions. For example, hydrolysis of ethyl chloride takes place by simple boiling with aqueous KOH. On the other hand, the alkaline hydrolysis of chlorobenzene needs a very high temperature (623 K) as well as very high pressure Fridel craft reaction of bromo benzene with methyl iodide gives

In both alkyl halides, The halogen atom is attached directly to the carbon atoms. They are expected to exhibit similar reactivity. However,aryl halides are comparatively little reactive, particularly towards nucleophilic substitution reactions. For example, hydrolysis of ethyl chloride takes place by simple boiling with aqueous KOH. On the other hand, the alkaline hydrolysis of chlorobenzene needs a very high temperature (623 K) as well as very high pressure Benzene reacts with Cl_(2) in the presence of FeCl_(3) (and absence of sun hight) to form

In aryl halide , halogen atom is attached ________.

In their nucleophilic substitution reactions, aryl halide resembles

Knowledge Check

  • In both alkyl halides, The halogen atom is attached directly to the carbon atoms. They are expected to exhibit similar reactivity. However,aryl halides are comparatively little reactive, particularly towards nucleophilic substitution reactions. For example, hydrolysis of ethyl chloride takes place by simple boiling with aqueous KOH. On the other hand, the alkaline hydrolysis of chlorobenzene needs a very high temperature (623 K) as well as very high pressure The halide which does not give any precipitate when warmed with alcoholic AgNO_(3) solution is

    A
    Chloro benzene
    B
    Benzyl chloride
    C
    Allyl chloride
    D
    Tert butyl chloride

  • In both alkyl halides, The halogen atom is attached directly to the carbon atoms. They are expected to exhibit similar reactivity. However,aryl halides are comparatively little reactive, particularly towards nucleophilic substitution reactions. For example, hydrolysis of ethyl chloride takes place by simple boiling with aqueous KOH. On the other hand, the alkaline hydrolysis of chlorobenzene needs a very high temperature (623 K) as well as very high pressure Fridel craft reaction of bromo benzene with methyl iodide gives

    A
    o-Bromotoluene
    B
    p-Bromotoluene
    C
    o and p-Bromotoluene
    D
    m-Bromotoluene

  • In both alkyl halides and aryl halides, the halogen (X) atom is attached directly to the carbon atom. They are expected to exhibit similar reactivity. However, aryl halides are comparatively very little reactive, particularly towards nucleophilic substitution reaction. for example, hydrolysis of ethyl chloride occurs by simply boiling with aqueous KOH. ON the other hand, the alkaline hydrolysis of chlorobenzene requires a very high temperature (623K) as well as a very high pressure. Q. Among the following which has weakest C-X bond?

    A
    Benzyl bromide
    B
    Bromobenzene
    C
    Vinyl bromide
    D
    Benzyl chloride.