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प्रश्न
What is the action of following on ethyl bromide?
alcoholic sodium hydroxide
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उत्तर
When ethyl bromide is boiled with an alcoholic solution of sodium hydroxide \[\ce{(NaOH)}\], an alkene is formed due to the elimination of hydrogen atoms from carbon and halogen from α-carbon, which is called dehydrohalogenation.
\[\ce{\underset{(Ethyl bromide)}{\overset{\beta\phantom{.............}\alpha\phantom{............}}{CH3 - CH2 - Br}} + \underset{(alc.)}{NaOH} ->[\Delta] \underset{(Ethene)}{CH2 = CH2} + NaBr + H2O}\]
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संबंधित प्रश्न
from the following pair would undergo SN2 faster from the other?
from the following pair would undergo SN2 faster from the other?
a. CH3CH2CH2I b. CH3CH2CH2Cl
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\[\ce{CH3 - CH = CH2 ->[HBr][peroxide] A ->[alc. KOH] B}\]
Complete the following reaction giving major products.

Name the reagent used to bring about the following conversion.
1-Chloropropane to 1-nitropropane
Name the reagent used to bring about the following conversion.
Ethyl bromide to ethyl isocyanide
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- 1-Bromopropane
- 2- Bromopropane
- 1- Bromobutane
- 1-Bromo-2-methylpropane
Convert the following:
Propene to propan-1-ol
Convert the following:
Benzyl alcohol to benzyl cyanide
Convert the following:
tert-Butyl bromide to isobutyl bromide
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Complete the following reaction sequence by writing the structural formulae of the organic compound 'A', 'B' and 'C'.
\[\ce{2-Bromobutane->[Alc.KOH]A->[][Br2]B->[][NaNH2]C}\]
Complete the following reaction sequence by writing the structural formulae of the organic compound 'A', 'B' and 'C'.
\[\ce{Isopropyl alcohol ->[\triangle][PBr3] A ->[][NH3 excess] B}\]
Observe the following and answer the question given below.

Can it react by SN1 mechanism? Justify your answer.
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The following will react faster by SN1 mechanism
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Nitroalkanes are obtained in laboratory from primary or secondary alkyl halides by the action of ______.
Identify 'B' in the following reaction.
\[\ce{2-Bromobutane ->[KOH alc.][\Delta] A ->[HI] B}\]
The order of reactivities of the following alkyl halides for an SN2 reaction is ______.
Which among the following statements is not correct about SN2 reaction mechanism?
Complete the following reactions giving a major product.
\[\begin{array}{cc}
\ce{CH3}\phantom{................}\\
|\phantom{..................}\\
\ce{CH3 - C - CH2 - Cl ->[Na/dry ether] A}\\
|\phantom{..................}\\
\ce{CH3}\phantom{................}
\end{array}\]
Observe the following and answer the questions given below:

Name the type of halogen derivative.
Define and explain the SN1 mechanism with a suitable example.
Complete the following reaction giving major product.
\[\begin{array}{cc}
\ce{CH3}\phantom{...............}\\
|\phantom{..................}\\
\ce{CH3 - C - CH2 - Cl->[Na/dry ether]A}\\
|\phantom{..................}\\
\ce{CH3}\phantom{...............}\\
\end{array}\]
Complete the following reaction giving major product.
\[\begin{array}{cc}
\ce{CH3}\phantom{................}\\
|\phantom{...................}\\
\ce{CH3 - C - CH2 - Cl ->[Na/dry ether] A}\\
|\phantom{...................}\\
\ce{CH3}\phantom{................}\\
\end{array}\]
