Chemistry · Class 12 · Chapter 9
Amines
12 lessons100 min7 simulations10 practice questions
Amines are ammonia with its hydrogens swapped for alkyl or aryl groups, keeping nitrogen's lone pair. The chapter names and classifies them, shows six ways to make them, explains their hydrogen bonding and why their base strength depends on inductive, solvation and resonance effects, and covers the reactions that tell 1°, 2° and 3° amines apart. It ends with diazonium salts: how they are made cold, how the –N₂⁺ group is swapped for halogens, –CN, –OH, –H or –NO₂, and how coupling makes azo dyes.
Also called: amines and diazonium salts · basicity of amines
Lessons
12 lessons · 100 min
01Structure, classes and namesNCERT §9.1–9.35 min02Preparing amines by reduction and ammonolysisNCERT §9.45 min03Gabriel and Hoffmann methodsNCERT §9.49 min1 sim04Physical properties of aminesNCERT §9.55 min05Basic character of aminesNCERT §9.617 min3 sims06Acylation, alkylation and the carbylamine testNCERT §9.65 min07Nitrous acid and Hinsberg's reagentNCERT §9.69 min1 sim08Electrophilic substitution in anilineNCERT §9.69 min1 sim09Diazonium salts: making and handlingNCERT §9.7–9.89 min1 sim10Replacing the diazonium groupNCERT §9.95 min11Coupling and uses in synthesisNCERT §9.9–9.105 min12Chapter reviewMust-know facts, traps and formulas17 min
Simulations
7 in this chapter
Count the carbonsIn: Gabriel and Hoffmann methodsHow basic is each amine?In: Basic character of aminesGas phase or water: the basicity order flipsIn: Basic character of aminesWhat a ring group does to aniline's lone pairIn: Basic character of aminesWhich amine passes which test?In: Nitrous acid and Hinsberg's reagentNitrating anilineIn: Electrophilic substitution in anilineKeep the diazonium salt coldIn: Diazonium salts: making and handling