Home
Class 12
CHEMISTRY
In the following questions, a statement ...

In the following questions, a statement of assertion (A) is following by a statement of reason (R )
A : In Hunsidiecker reaction, alkyl chlroide is formed poor yield.
R : in this reaction , carbanion is formed as an intermediate.

A

If both Assertion & Reason are the reason is the correct explanation of the assertion, then mark (1).

B

If both Assertion & Reason are true but the reason is not the correct explanation of the assertion, then mark(2).

C

If Assertion is true statement but Reason is false , then mark (3)

D

If both Assertion and Reason are false statements, then mark (4)

Text Solution

AI Generated Solution

The correct Answer is:
To analyze the assertion and reason provided in the question, we will break down the components of the assertion (A) and the reason (R) step by step. ### Step 1: Understanding the Assertion (A) **Assertion (A)** states that in the Hunsidiecker reaction, alkyl chloride is formed in poor yield. **Explanation**: The Hunsdiecker reaction involves the halogenation and decarboxylation of silver salts of carboxylic acids. The reaction typically leads to the formation of alkyl halides (like alkyl chlorides or bromides) but often results in low yields due to the instability of the intermediates involved. ### Step 2: Understanding the Reason (R) **Reason (R)** states that in this reaction, a carbanion is formed as an intermediate. **Explanation**: In the Hunsdiecker reaction, the mechanism involves the formation of free radicals rather than carbanions. The reaction proceeds through a radical mechanism, where the silver salt reacts with halogens, leading to the formation of alkyl halides and carbon dioxide. Therefore, the assertion about the formation of a carbanion is incorrect. ### Step 3: Evaluating the Relationship Between A and R Now we need to evaluate if the assertion is true and if the reason correctly explains the assertion. - The assertion (A) is **true**: Alkyl chloride is indeed formed in poor yield in the Hunsdiecker reaction. - The reason (R) is **false**: The intermediate formed is a radical, not a carbanion. ### Conclusion Since the assertion is true but the reason is false, we conclude that the correct answer is that the assertion is true, but the reason is not a valid explanation for the assertion. ### Final Answer - **Assertion (A)**: True - **Reason (R)**: False
Promotional Banner

Topper's Solved these Questions

  • HALOALKANES AND HALOARENES

    AAKASH INSTITUTE ENGLISH|Exercise ASSIGNMENT SECTION - C|39 Videos

  • GENERAL PRINCIPLES AND PROCESSES OF ISOLATION OF ELEMENTS

    AAKASH INSTITUTE ENGLISH|Exercise Try Yourself|33 Videos

  • HYDROCARBONS

    AAKASH INSTITUTE ENGLISH|Exercise Assignment(Section - C) (Previous Years Questions)|60 Videos

Similar Questions

Explore conceptually related problems

In the following questions, a statement of assertion (A) is followed by a statement of reason (R ) A : O_(2) is paramagnetic . R : N_(2) is paramagnetic .

In the following questions, a statement of assertion (A) is following by a statement of reason (R ) A: Dow's process is an example of nucleophillic substitution reaction. R : In this process, benzyne is formed as an intermediate.

In the following questions, a statement of assertion (A) is following by a statement of reason (R ) A: on reaction with alcoholic KOH gives R: Bond energy of C-D bond is less than of C-H bond.

In the following questions, a statement of assertion (A) is following by a statement of reason (R ) A : when alkyl halide is reacted with AgCN then alkyl isocyanide is formed . R : AgCN is a covalent compound and only the site of nitrogen is available for the reaction.

In the following questions, a statement of assertion (A) is followed by a statement of reason (R ) A : PCl_(5) exist but NCl_(5) does not R : Nitrogen is highly inert.

In the following questions, a statement of assertion (A) is followed by a statement of reason (R ) A : Both methane and tetrachloromethane are nonpolar. R : C-Cl bond is polar bond.

In the following questions, a statement of assertion (A) is following by a statement of reason (R ) A : primary alkyl halides on oxidation with DMSO gives aldehydes. R : DMSO is used as polar aprotic solvent .

In the following question a statement of assertion (A) is followed by a statement of reason (R ) A : An equipotential surface is normal to electric field lines. R : Potential increases in direction of electric field .

In the following questions, a statement of assertion (A) is followed by a statement of reason (R ) A : Equal number of sigma and pi bonds are present in ethyne. R : pi Bond is stronger than sigma bond.

In the following questions, a statement of assertion (A) is following by a statement of reason (R ) A : Chlorobenzene on reaction with sodium metal in the presence of dry ether gives diphenyl. R: This reaction is called UIImann reaction.