Question

Arrange the following in increasing order of rate of Nitration.

• A. b $<$ c $<$ a $<$ d $<$ e
• B. d $<$ e $<$ a $=$ c $<$ b
• C. d $<$ a $=$ c $<$ e $<$ b
• D. a $<$ c $<$ b $<$ e $<$ d

Answer 1

The correct option is A b $<$ c $<$ a $<$ d $<$ e

increasing order of rate of nitration is $b<c<a<d<e$
in this reaction benzene is treated with a mixture of concentrated nitric acid and concentrated sulphuric acid at a temperature not exceeding that ${50}^{o}c$. during the course of this reaction a electrophile is the nitronium ion or the nitryl cation . $N{O}_2^{+}$. this is formed by reaction between the nitric ais an the suphuric acid
$HN{O}_3+H_{2}S{O}_4\to N{O}_2+2HS{O}_4^{-}+H_3{O}^{+}$