Same chapter3 marksDifficulty: Medium
Arrange aniline, methylamine, dimethylamine and ammonia in order of increasing basicity in aqueous solution.
Organic Compounds containing Nitrogen
3 marksDifficulty: Medium
What are diazonium salts and why are they important in synthesis?
Original Khojo Papers practice question — not from a past board paper.
Answer
Diazonium salts have the general formula ArN2+X− and are made by treating a primary aromatic amine with nitrous acid at 0 to 5 °C. They are important because the diazonium group is readily replaced by a great many others — halogen, cyanide, hydroxyl, hydrogen — so a wide range of substituted benzenes can be made from one amine, and they also couple with phenols and amines to give azo dyes.
No citable source has been recorded for this record. Treat it as practice material, not as fact.
Explanation
The Sandmeyer reaction is the best known of these replacements.
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