MCQ
Consider the nitration of benzene using mixed conc. $H_2SO_4$ and $HNO_3. $ If a large amount of $KHSO_4$ is added to the mixture, the rate of nitration will be
- Aunchanged
- Bdoubled
- Cfaster
- ✓slower.
$\mathrm{KHSO}_{4} \longrightarrow \mathrm{K}^{\oplus}+\mathrm{H\stackrel{\ominus}{S}O}_{4}$
Due to common ion effect backward reaction will take so the formation $\mathrm{NO}_{2}^{+}$ decrease so nitration process will become slower.
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