Which of the following statements is incorrec | vedclass

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Question

(C) The nitration of benzene is an electrophilic aromatic substitution reaction where the rate-determining step is the formation of the sigma complex

Vedclass · Accepted Answer

The rate of nitration of benzene is higher than the rate of nitration of hexadeuterobenzene.

Vedclass · Answer

(C) The nitration of benzene is an electrophilic aromatic substitution reaction where the rate-determining step is the formation of the sigma complex (arenium ion). Since the $C-H$ or $C-D$ bond cleavage occurs after the rate-determining step,there is no primary kinetic isotope effect. Therefore,the rate of nitration of benzene $(C_6H_6)$ and hexadeuterobenzene $(C_6D_6)$ is approximately the same. Statement $C$ claims that the rate of nitration of benzene is higher than that of hexadeuterobenzene,which is incorrect.

Which of the following statements is incorrect regarding the nitration of aromatic compounds?

Similar Questions

Consider the following reactions:
$C_2 H_2 \xrightarrow[500^{\circ}C]{\text{red hot iron tube}} A$
$A \xrightarrow[70^{\circ}C]{\text{conc. } HNO_3, \text{conc. } H_2 SO_4} B$
$B \xrightarrow{LiAlH_4} C_6 H_5-N=N-C_6 H_5$
$A$ and $B$ are:

What are the necessary conditions for any system to be aromatic?

Statement-$I$: Benzene gives Friedel-Crafts reaction.
Statement-$II$: All substituted benzenes give Friedel-Crafts reaction.
Choose the correct statement:

The 'middle oil' fraction of coal tar distillation contains

The major product formed in the following reaction sequence is:
$C_6H_5-CHBr-CH_2Br$ $\xrightarrow[(ii) NaNH_2]{(i) alc. KOH}$ $\xrightarrow[(iii) \text{Red hot iron tube}, 873 K]{}$

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