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Rate determining step in nitration of benzene is
Options
(a) formation of NO₂⁺
(b) formation of carbocation
(c) replacement of H atom
(d) none of these
Correct Answer:
formation of carbocation
Explanation:
The nitration of benzene takes places in three steps, i.e.
(i) Generation of electrophile(NO₂⁺), (ii) Attack of an electrophile to benzene ring forming the carbocation. (iii) Loss of proton from carbocation giving nitrobenzene. The attack of electrophile to benzene ring giving a carbocation is the slowest and rate determining step.
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Topics: Hydrocarbons
(84)
Subject: Chemistry
(2512)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- The Ca²⁺ and F⁻ are located in CaF₂ crystal,respectively at face centred cubic lattic points
- Phenylethyl ether when boiled with concentrated HBr gives
- The equilibrium constant for mutarotation α-D Glucose ⇌ β-D Glucose is 1.8.
- The enthalpy of fusion of water is 1.435 kcal/mol.The molar entropy
- If uncertainty in position and momentum are equal, then uncertainty in velocity
Topics: Hydrocarbons (84)
Subject: Chemistry (2512)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
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