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 In the nucleophilic substitution reaction in alkyl halides (R-X) , the nucleophile replaces:
  • a)
    Carbocation
  • b)
    Carbon atom of the C-X bond
  • c)
    Carbanion
  • d)
    Halide ion
Correct answer is option 'D'. Can you explain this answer?
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In the nucleophilic substitution reaction in alkyl halides (R-X) , the...
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In the nucleophilic substitution reaction in alkyl halides (R-X) , the...
Nucleophilic substitution reaction in alkyl halides (R-X) involves the replacement of halide ion (X) by a nucleophile. This reaction usually occurs through a two-step mechanism, which involves the formation of a carbocation intermediate.

The nucleophile attacks the carbocation intermediate and replaces the halide ion, resulting in the formation of a new compound. The mechanism of the reaction depends on the nature of the nucleophile and the substrate.

The correct answer to the question is option 'D', which states that the nucleophile replaces the halide ion in the reaction. This is because the halide ion is the leaving group in the reaction, which is replaced by the incoming nucleophile.

The mechanism of the nucleophilic substitution reaction can be explained in the following steps:

1. Formation of carbocation intermediate: The alkyl halide (R-X) undergoes heterolytic cleavage to form a carbocation intermediate and a halide ion.

R-X → R+ + X-

2. Attack by nucleophile: The nucleophile attacks the carbocation intermediate and forms a new bond with the carbon atom.

Nuc: + R+ → R-Nuc

3. Deprotonation: The final step involves the removal of a proton from the newly formed compound to regenerate the neutral product.

R-Nuc → R-NucH+ → R-Nuc + H+

In conclusion, the nucleophile replaces the halide ion in the nucleophilic substitution reaction in alkyl halides. This reaction is an important mechanism in organic chemistry, and it has many applications in the synthesis of various organic compounds.
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In the nucleophilic substitution reaction in alkyl halides (R-X) , the...
The nucleophilic substitution reaction substitutes nucleophile in molecule thus formation of carbanion is not possible, the CX bond is polar as carbon is partially positive and x is partially negative thus nucleophile is replaced by nucleophile that is with x thus carbcation is formed in between mechanism after removal of x thus nucleophile replaces halide ion .
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