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प्रश्न

Which of the statements are correct about above reaction?
(i) (a) and (e) both are nucleophiles.
(ii) In (c) carbon atom is sp3 hybridised.
(iii) In (c) carbon atom is sp2 hybridised.
(iv) (a) and (e) both are electrophiles.
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उत्तर
(i) (a) and (e) both are nucleophiles.
(iii) In (c) carbon atom is sp2 hybridised.
Explanation:
HO− and Cl− are nucleophiles.
In (iii), C atom is sp2 hybridised due to formation of \[\ce{C - OH}\] bond and breaking of \[\ce{C - Cl}\] bond simultaneously. So, in the transition state, the C atom is bonded to only 3 H atoms completely.
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संबंधित प्रश्न
Write the structure of the major product in each of the following reaction :

In the following pair of halogen compounds, which compound undergoes a faster SN1 reaction?

Write the mechanism of the following reaction:
\[\ce{{n}BuBr + KCN ->[EtOH-H2O] {n}BuCN}\]
Arrange the compounds of the following set in order of reactivity towards SN2 displacement:
1-Bromo-3-methylbutane, 2-Bromo-2-methylbutane, 2-Bromo-3-methylbutane
Out of C6H5CH2Cl and C6H5CHClC6H5, which is more easily hydrolysed by aqueous KOH.
What happens when methyl chloride is treated with KCN?
SN1 reactions are accompanied by racemization in optically active alkyl halides.
The order of reactivities of the following alkyl halides for an SN2 reaction is:
The process of separation of a racemic modification into d and l-enantiomers is called ____________.
The correct order of increasing the reactivity of C–X bond towards nucleophile in following compounds.

(I)

(II)
(CH3)3CCl
(III)
(CH3)2CHCl
(IV)
Elimination reactions (especially β-elimination) are as common as the nucleophilic substitution reaction in case of alkyl halides. Specify the reagents used in both cases.
Chlorination of alkanes is an example of
Which of the following compounds will show retention in configuration on nucleophile substitution by OH− ion?
Racemisation occurs in ______.
Retention of configuration is observed in ______.
Convert bromoethane to propanamine.
Discuss SN2 mechanism of methyl bromide using aqueous KOH.
Which alkyl halide from the following pair would you expect to react more rapidly by an SN2 mechanism? Explain your answer.
\[\begin{array}{cc}\ce{CH3CHCH2CH2Br}\\|\phantom{.........}\\\ce{CH3}\phantom{......}\end{array}\] or \[\begin{array}{cc}\ce{CH3CH2CHCH2Br}\\\phantom{}|\\\phantom{...}\ce{CH3}\end{array}\]
The correct order of increasing reactivity of

C-X bond towards nucleophile in the following compounds is:
Assertion (A):
undergoes SN2 reactions faster than
.
Reason (R): Iodine is a better leaving group because of its large size.
In the light of the above statements, choose the correct answer from the options given below:
