Home
Class 12
CHEMISTRY
Reactivity of order of halides for dehyd...

Reactivity of order of halides for dehydrohalogenation is

A

R- Fgt R-Clgt R-Brgt R-I

B

R- I gt R-Brgt R-Clgt R-F

C

R-Igt R-Clgt R-Brgt R-F

D

R=-Fgt Rgt-I gt R-brgt R-Cl

Text Solution

Verified by Experts

The correct Answer is:
b
As the size of halide ion increases the R-X bond with strength decreases and the halide ion will br a good leaving group . Thus the reactivity order is
R-l> R-Br> R-Cl> R-F
Doubtnut Promotions Banner Mobile Dark
|

Topper's Solved these Questions

  • CHEMISTRY

    KCET PREVIOUS YEAR PAPERS|Exercise MCQs|60 Videos

  • KARNATAKA CET 2001

    KCET PREVIOUS YEAR PAPERS|Exercise Chemistry|55 Videos

Similar Questions

Explore conceptually related problems

Explain dehydrohalogenation of dihalides.

The order of reactivity of 1^@ ,2^2,3^@ alkyl halides in dehydrogenation is

Knowledge Check

  • The reactivity order of halides for dehydrohalogenation is :

    A
    `R-FgtR-ClgtR-BrgtR-I`
    B
    `R-IgtR-BrgtR-ClgtR-F`
    C
    `R-IgtR-ClgtR-BrgtR-F`
    D
    `R-FgtR-IgtR-BrgtR-Cl`

  • The reactivity order of halides in dehydrohalogenation reaction is

    A
    `R-F gt R-Cl gt R-Br gt R-I`
    B
    `R-I gt R-Br gt R-Cl gt R-F`
    C
    `R-I gt R-Cl gt R-Br gt R-F`
    D
    `R-F gt R-I gt R-Br gt R-Cl`

  • The reagent used for dehydrohalogenation is :

    A
    alc. KOH
    B
    aq. KOH
    C
    sodamide
    D
    NaOH + CaO

    • Similar Questions

    Explore conceptually related problems

    The order of reactivity of alkyl halides towards elimination reaction is

    The increasing order of reactivity of the following halides for the S_(N^1) reaction is (I) CH_3CH(Cl)CH_2CH_3 (II) CH_3CH_2CH_2Cl (III) p-H_3CO-C_6H_4-CH_2Cl

    The halide which is not hydrolysed is :

    For S_(N^1) reaction, the order of reactivity of haloalkanes is

    The order of reactivities of methyl halides in the formation of Grignard reagent is

    Home
    Profile