Haloalkanes and Haloarenes · Class 12 · CBSE · Science Chemistry
Chlorobenzene is extremely less reactive towards nucleophilic substitution compared to chloromethane. Which of the following is NOT a valid reason fo…
Practice question from Haloalkanes and Haloarenes (Class 12 · CBSE · Science Chemistry), with the correct answer and a step-by-step solution.
hard · MCQ · Q-9BB267
Chlorobenzene is extremely less reactive towards nucleophilic substitution compared to chloromethane. Which of the following is NOT a valid reason for this?
- A.Resonance stabilization of chlorobenzene
- B. hybridized carbon attached to chlorine in chlorobenzene
- C.Instability of the phenyl cation formed during mechanism
- D.Repulsion between the approaching nucleophile and the positively charged carbon atomCorrect answer
Solution
In haloarenes, the carbon atom attached to chlorine is actually neutral or carries a partial positive charge, and nucleophiles are attracted to it, not repelled by a positively charged carbon. The true reasons for low reactivity include resonance effect (partial double bond character of C-Cl), hybridization of carbon (stronger C-Cl bond), and instability of the phenyl cation.
More from Haloalkanes and Haloarenes
- Which of the following alkyl halides undergoes hydrolysis most rapidly via the SN1 mechanism?
- Identify the major product formed when 2-bromobutane is treated with alcoholic KOH.
- Which of the following compounds is optically active?
- What happens when methyl chloride is treated with aqueous KOH?
Practise more Chemistry
Sign up free for adaptive practice on this chapter, with instant feedback and hints on every question.
Start practising freeFree to start · No credit card needed