Equilibrium - Result Question 69
####73. Consider the nitration of benzene using mixed conc of $H_2 SO_4$ and $HNO_3$. If a large amount of $KHSO_4$ is added to the mixture, the rate of nitration will be
[2016]
(a) faster
(b) slower
(c) unchanged
(d) doubled
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Solution:
- (b) The presence of large amount of $KHSO_4$ will decrease ionisation of $H_2 SO_4$ that result in lesser ionisation of nitric acid and lesser formation of nitronium ion $[NO_2^{+}]$. Hence the rate of nitration will be slower.
