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In the reaction of phenol with CHCl₃ and aq.KOH the electrophile attacking the ring is
Options
(a) CHCl₃
(b) CHCl₂
(c) :CCl₂
(d) COCl₂
Correct Answer:
:CCl₂
Explanation:
The electrophile is dichloromethylene :CCl₂ generated from chloroform by the action of a base. OH⁻ + CHCl₃ ⇌ HOH + :CCl₃ → Cl⁻ + :CCl₂(Dichlorocarbene).
Related Questions: - For a reaction, 2NOCl(g) + Cl₂(g) , Kc at 427⁰C is 3 ˣ 10⁻⁶ L.mol⁻¹.
- In the cyanide ion, the formal negative charge is on
- The values of heat of formation of SO₂ and SO₃ are -298.2 kJ and -98.2 kJ.
- The oxidation state of chlorine in HClO₄ is
- AgNO₃ does not give precipitate with CHCl₃ because
Topics: Haloalkenes and Haloarenes
(78)
Subject: Chemistry
(2512)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- For a reaction, 2NOCl(g) + Cl₂(g) , Kc at 427⁰C is 3 ˣ 10⁻⁶ L.mol⁻¹.
- In the cyanide ion, the formal negative charge is on
- The values of heat of formation of SO₂ and SO₃ are -298.2 kJ and -98.2 kJ.
- The oxidation state of chlorine in HClO₄ is
- AgNO₃ does not give precipitate with CHCl₃ because
Topics: Haloalkenes and Haloarenes (78)
Subject: Chemistry (2512)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
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