Which of the following statements is incorrect regarding benzyl chlor...
Benzyl chloride is very reactive. It readily gives white precipitate with alcoholic AgNO
3 at room temperature. It also readily undergoes nucleophilic substitution. Its structure is as follows
Vinyl chloride(CH2 = CH−Cl), on the other hand, is less reactive than benzyl chloride due to the involvement of lone pair on chlorine atom in resonance.
Which of the following statements is incorrect regarding benzyl chlor...
Benzyl chloride (C6H5CH2Cl) is an organic compound that belongs to the class of alkyl halides. It is derived from benzene by replacing one of the hydrogen atoms with a chlorine atom. Let's analyze each statement and see why option D is incorrect.
a) It gives white precipitate with alcoholic AgNO3:
When benzyl chloride reacts with alcoholic silver nitrate (AgNO3), it forms a white precipitate of silver chloride (AgCl). This reaction is a typical test for the presence of a halogen in organic compounds. Therefore, statement a) is correct.
b) It is an aromatic compound with substitution in the side chain:
Benzyl chloride is not an aromatic compound itself. It is an alkyl halide, which means it has an alkyl group (CH2) attached to the benzene ring. The benzene ring itself is aromatic, but the substitution is happening in the side chain. Therefore, statement b) is correct.
c) It undergoes nucleophilic substitution reaction:
Benzyl chloride is highly reactive due to the presence of the electron-withdrawing chlorine atom. It readily undergoes nucleophilic substitution reactions, where a nucleophile replaces the chlorine atom. This can occur through SN1 or SN2 mechanisms, depending on the reaction conditions. Therefore, statement c) is correct.
d) It is less reactive than vinyl chloride:
This statement is incorrect. Vinyl chloride (CH2=CHCl) is more reactive than benzyl chloride. Vinyl chloride is an alkene, which means it has a carbon-carbon double bond. The presence of this double bond makes it more susceptible to addition reactions. In contrast, benzyl chloride is an alkyl halide, and the presence of the chlorine atom makes it less reactive than vinyl chloride. Therefore, option D is the incorrect statement.
In conclusion, the incorrect statement regarding benzyl chloride is that it is less reactive than vinyl chloride.
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