Reactions with Nitrous Acid and Diazotization
Study how primary, secondary, and tertiary amines react with nitrous acid, the process of diazotization, and the stability and decomposition of diazonium salts.
Why this shows up in the exam
Exams test your understanding of these reactions and their use in distinguishing amine types and preparing other compounds.
How NEET tests this
Practise it
These are real questions from past NEET papers that test this exact idea.
The major product Z formed in the following sequence of reactions is C₂H₆ UV light Cl₂ → X (monochlorinated product) NH₃ → Y (i) NaNO₂, HCl (ii) H₂O → Z
Push further
More challenging9 harder questions built from the past papers above — a step up in difficulty, with distractors designed so you can't get there by elimination. Written and checked by our reviewers, not from a real paper.
When ethylamine is treated with nitrous acid (NaNO2/HCl) at 0-5°C, what is the major organic product formed?
More from Amines
Preparation of Amines
Learn the main laboratory and industrial methods for synthesizing primary, secondary, and tertiary amines, including reduction of nitro compounds, nitriles, amides, and specialized reactions like Hoffmann bromamide and Gabriel phthalimide synthesis.
Chemical Tests for Amines
Understand the characteristic tests for identifying primary, secondary, and tertiary amines, such as the carbylamine test, Hinsberg test, and other distinguishing reactions.
Basicity of Amines
Explore the factors affecting the basic strength of aliphatic and aromatic amines, including inductive effects, resonance, substituents, and solvent effects.
Properties and Reactions of Diazonium Salts
Learn about the preparation, stability, and key reactions of diazonium salts, including Sandmeyer, deamination, and azo coupling reactions.
Electrophilic Aromatic Substitution and Directing Effects of Amino Groups
Understand how amino and related groups influence the orientation and reactivity of aromatic substitution reactions, including the effects of protection and protonation.
Special Reactions and Limitations in Amines Chemistry
Be aware of unique reactions (like Friedel-Crafts, acetylation) and the limitations or exceptions in amine chemistry, such as with Gabriel synthesis and Friedel-Crafts alkylation.