NEET Solved Paper 2016 Question 24
Question: Consider the nitration of benzene using mixed conc. $ {H_2}S{O_4} $ and $ HN{O_3}\text{.} $ If a large amount of $ KHS{O_4} $ is added to the mixture, the rate of nitration will be:-
Options:
A) faster
B) slower
C) unchanged
D) doubled
Show Answer
Answer:
Correct Answer: B
Solution:
Slower, as large amount of $ HSO_4^{-} $ will decrease ionisation of $ {H_2}S{O_4} $ that result in lesser ionization of nitric acid and lesser formation of nitronium ion $ [NO _2^{+}] $
