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Assertion (A) : C(2)H(5)Br and alcoholic...

Assertion (A) : `C_(2)H_(5)Br` and alcoholic silver nitrite react to give nitroethane as a major product.
Reason (R ) : `NO_(2)^(-)` is an ambident nucleophile.

A

If both assertion and reason are true and reason is the correct explanation of assertion

B

If both assertion and reason are true but reason is not the correct explanation of assertion

C

If assertion is true but reason is false

D

If both assertion and reason are false.

Text Solution

AI Generated Solution

The correct Answer is:
To solve the question, we need to analyze both the assertion and the reason provided. ### Step 1: Analyze the Assertion The assertion states that `C2H5Br` (bromoethane) reacts with alcoholic silver nitrite (`AgNO2`) to produce nitroethane as the major product. - **Reaction Mechanism**: In this reaction, the nitrogen atom in the nitrite ion (`NO2^(-)`) acts as a nucleophile. It attacks the carbon atom in bromoethane, leading to the substitution of the bromine atom. The reaction can be represented as follows: \[ C2H5Br + AgNO2 \rightarrow C2H5NO2 + AgBr \] - **Conclusion**: The assertion is correct because the reaction indeed produces nitroethane. ### Step 2: Analyze the Reason The reason states that `NO2^(-)` is an ambident nucleophile. - **Definition of Ambident Nucleophile**: An ambident nucleophile is a nucleophile that can attack from two different atoms. In the case of the nitrite ion (`NO2^(-)`), it can attack either through the nitrogen atom or through one of the oxygen atoms. - **Structure of NO2^(-)**: The nitrite ion has a resonance structure that allows for nucleophilic attack from either the nitrogen or the oxygen. - **Conclusion**: The reason is also correct, as `NO2^(-)` can act as an ambident nucleophile. ### Step 3: Determine the Relationship While both the assertion and the reason are correct, the reason does not directly explain why nitroethane is the major product of the reaction. The assertion is about the reaction outcome, while the reason describes the nature of the nucleophile. ### Final Conclusion Both the assertion and the reason are true, but the reason is not the correct explanation for the assertion. ### Answer: Both assertion and reason are true, but the reason is not the correct explanation for the assertion. ---
To solve the question, we need to analyze both the assertion and the reason provided. ### Step 1: Analyze the Assertion The assertion states that `C2H5Br` (bromoethane) reacts with alcoholic silver nitrite (`AgNO2`) to produce nitroethane as the major product. - **Reaction Mechanism**: In this reaction, the nitrogen atom in the nitrite ion (`NO2^(-)`) acts as a nucleophile. It attacks the carbon atom in bromoethane, leading to the substitution of the bromine atom. The reaction can be represented as follows: \[ ...
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