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Observe the following and answer the question given below. Can it react by SN1 mechanism? Justify your answer. - Chemistry

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प्रश्न

Observe the following and answer the question given below.

Can it react by SN1 mechanism? Justify your answer.

टीपा लिहा
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उत्तर

It will not react by SN1 mechanism. The bond between sp2 hybridized carbon atom and halogen is a strong bond. Also, the electrons of the –X atom are in conjugation with the π bond. Thus, C – X bond acquires a double bond character. Thus, when nucleophile approaches the sp2 carbon, it gets repelled by the π-electrons of the double bond.

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पाठ 10: Halogen Derivatives - Exercises [पृष्ठ २३३]

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बालभारती Chemistry [English] Standard 12 Maharashtra State Board
पाठ 10 Halogen Derivatives
Exercises | Q 7. iii. c. | पृष्ठ २३३

संबंधित प्रश्‍न

from the following pair would undergo SN2 faster from the other?

  1.    

from the following pair would undergo SN2 faster from the other?

a. CH3CH2CH2I      b. CH3CH2CH2Cl


Name the reagent used to bring about the following conversion.

Bromoethane to ethoxyethane


Name the reagent used to bring about the following conversion.

Chlorobenzene to biphenyl


Arrange the following in the increasing order of boiling points.

  1. 1-Bromopropane
  2. 2- Bromopropane
  3. 1- Bromobutane
  4. 1-Bromo-2-methylpropane

Convert the following:

Benzyl alcohol to benzyl cyanide


Convert the following:

2-Chloropropane to propan-1-ol


HCl is added to a hydrocarbon ‘A’ \[\ce{(C4H8)}\] to give a compound ‘B’ which on hydrolysis with aqueous alkali forms tertiary alcohol ‘C’ \[\ce{(C4H10O)}\]. Identify ‘A’ ,‘B’ and ‘C’.


Observe the following and answer the question given below.

Name the type of halogen derivative.


Observe the following and answer the question given below.

Comment on the bond length of C–X bond in it.


Nucleophilic substitution reaction of 2, 4-dinitrochlorobenzene is faster than p-nitrochlorobenzene. Give reason.


Explain. Aryl halides are less reactive than alkyl halides towards nucleophilic substitution reactions.


Explain primary benzylic halide shows higher reactivity by SN1 mechanism than other primary alkyl halide.


Explain aqueous alkaline hydrolysis of tert. butyl bromide.


The least reactive towards nucleophilic addition reactions is ____________.


Nitroalkanes are obtained in laboratory from primary or secondary alkyl halides by the action of ______.


The following mechanism has been proposed for the reaction of NO2 with F2 to form NO2F:

\[\ce{NO2_{(g)} + F2_{(g)} -> NO2F_{(g)} + F_{(g)} (slow)}\]

\[\ce{F_{(g)} + NO2_{(g)} -> NO2F_{(g)} (fast)}\]

The order of the reaction with respect to NO2(g)


Which one is most reactive towards nucleophilic addition reaction?


What type of hybridisation is present in carbocation formed during the alkaline hydrolysis of 1- bromo-1- phenyl ethane?


Convert the following.

p-Nitrochlorobenzene to p-nitrophenol


The order of reactivity of the given haloalkanes towards nucleophiles is:


Which among the following statements is not correct about SN2 reaction mechanism?


With which halogen the reactions, of alkanes are explosive?


Observe the following and answer the question given below:

Comment on the bond length of C-X bond in it.


Complete the following reaction sequences by writing the structural formulae of the organic compounds 'A', 'B' and 'C'.

\[\ce{2-Bromobutan ->[alc. KOH] A ->[][Br2] B ->[][NANH2] C}\]


Complete the reaction:

\[\ce{CH3CH2Cl ->[AgCN][alc.\Delta]}\] ?


Complete the following reaction giving major product.

\[\begin{array}{cc}
\ce{CH3}\phantom{.................}\\
|\phantom{...................}\\
\ce{CH3 - C - CH2 - Cl ->[Na/dry ether] A}\\
|\phantom{...................}\\
\ce{CH3}\phantom{.................}
\end{array}\]


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