Assertion : Cyanide (CN^{-}) is a strong nucl | vedclass

Name: Exam Paper Generator | JEE NEET Paper Generator | Vedclass
Brand: Vedclass
Rating: 5 (35 reviews)

Question

(C) The cyanide ion $(CN^{-})$ is indeed a strong nucleophile because the negative charge is present on the carbon atom,which is less electronegative

Vedclass · Accepted Answer

If the Assertion is correct but Reason is incorrect.

Vedclass · Answer

(C) The cyanide ion $(CN^{-})$ is indeed a strong nucleophile because the negative charge is present on the carbon atom,which is less electronegative than nitrogen,making it a good electron donor. Thus,the Assertion is correct.However,chlorobenzene does not undergo nucleophilic substitution with $KCN$ under normal conditions because the $C-Cl$ bond in chlorobenzene acquires partial double bond character due to resonance,making it resistant to nucleophilic attack. Therefore,benzonitrile cannot be prepared by this method. Thus,the Reason is incorrect.

Assertion : Cyanide $(CN^{-})$ is a strong nucleophile.
Reason : Benzonitrile is prepared by the reaction of chlorobenzene with potassium cyanide.

Similar Questions

Identify the product when chlorobenzene is heated with nitrating mixture.

The reaction of an aryl halide with an alkyl halide and sodium metal in dry ether to form substituted aromatic compounds is known as:

Diphenyls are a potential threat to the environment. How are these produced from aryl halides?

The product $(A)$ of the given reaction is:

The reaction of an aromatic halogen compound with an alkyl halide in the presence of sodium and ether is called:

Vedclass Test Series

Exam Paper Generator

Online Exam Module

Assertion : Cyanide $(CN^{-})$ is a strong nucleophile.Reason : Benzonitrile is prepared by the reaction of chlorobenzene with potassium cyanide.