InterviewSolution
Saved Bookmarks
InterviewSolution
| 1. |
Consider the nitratio of benzene using mixed conc. `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 `:`A. slowerB. unchangedC. doubledD. faster |
|
Answer» Correct Answer - A In the nitration of benzene in the presence of conc. `H_(2)SO_(4) " and" HNO_(3)`, nitrobenzene is formed. `HNO_(3)+H_(2)SO_(4) hArr NO_(2)^(+) + underset("Electrophile")(HSO_(4)^(-))+underset("Nucleophile")(H_(2)O)` If large amount of `KHSO_(4)` is added to this mixture, more `HSO_(4)^(-)` ion furnishes and hence the concentration of `NO_(2)^(+)`, i.e., electrophile decreases. As concentration of electrophile decreases, rate of electrophilic aromatic reaction also decreases. |
|