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प्रश्न
What is the role of \[\ce{HNO3}\] in the nitrating mixture used for nitration of benzene?
उत्तर
\[\ce{HNO3}\] acts as a base in the nitrating mixture \[\ce{(HNO3 + H2SO4)}\] and provides the electrophile.
\[\ce{HNO3 + H2SO4 -> \underset{Electrophile}{NO^{+}2 + HSO^{-}4} + H2O}\]
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संबंधित प्रश्न
How is chlorobenzene prepared from aniline?
What is the action of acetic anhydride on ethylamine?
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Aniline does not undergo Friedel- Crafts reaction.
Write the structures of main products when aniline reacts with the following reagents :
(CH3CO)2O/pyridine
Account for the following:
Although the amino group is o, p-directing in aromatic electrophilic substitution reactions, aniline on nitration gives a substantial amount of m-nitroaniline.
Illustrate the following reactions giving suitable example in each case
Acetylation of amines
How will you convert the following?
Aniline into N−phenylethanamide
A solution contains 1 g mol. each of p-toluene diazonium chloride and p-nitrophenyl diazonium chloride. To this 1 g mol. of alkaline solution of phenol is added. Predict the major product. Explain your answer.
Assertion: N, N-Diethylbenzene sulphonamide is insoluble in alkali.
Reason: Sulphonyl group attached to nitrogen atom is strong electron-withdrawing group.
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