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प्रश्न
How do polar solvents help in the first step in SN1 mechanism?
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उत्तर
The SN1 mechanism proceeds through the formation of carbocation. It involves breaking of C-halogen bond for which energy is obtained through the salvation of halide ion with the proton of the protic solvent. Thus, polar solvents help in ionisations step by stabilizing the ions by solvation.
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संबंधित प्रश्न
Which would undergo SN1 reaction faster in the following pair and why?
Given reasons: C–Cl bond length in chlorobenzene is shorter than C–Cl bond length in CH3–Cl.
Write the isomers of the compound having the formula C4H9Br.
What is the action of the following on ethyl bromide:
moist silver oxide
Answer the following question.
Write one stereochemical difference between SN1 and SN2 reactions.
Which of the following reactions is an example of nucleophilic substitution reaction?
Which one is most reactive towards SN1 reaction?
Which of the following compounds is optically active?
The increasing order of nucleophilicity would be:
Which of the following compound will undergo racemisation when reacts with aq. KOH?
(i)
(ii)
CH3CH2CH2Cl
(iii)
\[\begin{array}{cc}
\ce{CH3}\phantom{..}\\
|\phantom{....}\\
\ce{CH3-CH-CH2Cl}
\end{array}\]
(iv)
\[\begin{array}{cc}
\phantom{..}\ce{H}\\
\phantom{..}|\\
\ce{CH3-C-Cl}\\
\phantom{..}|\\
\phantom{.....}\ce{C2H5}
\end{array}\]
The increasing order of reactivity towards SN1 mechanism is:
(I) \[\begin{array}{cc}
\ce{CH3-CH-CH2-CH3}\\
|\phantom{........}\\
\ce{CH3}\phantom{.....}
\end{array}\]
(II) CH3CH2CH2Cl
(III) P–CH3O–C6H4–CH2Cl
Which of the following compounds will give a racemic mixture on nucleophilic substitution by OH ion?
1-Bromoethane, 1-Bromopropane, 1-Bromobutane, Bromobenzene
A primary alkyl halide would prefer to undergo ______.
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\[\ce{CH3-CH2-Cl}\] or \[\ce{C6H5-CH2-Cl}\]
Which of the following is the definition of chirality?
Give reason for the following:
The product formed during SN1 reaction is a racemic mixture.
Acetic anhydride from acetic acid
The compound that will undergo SN1 reaction with the fastest rate is:
