29 public questions tagged with this topic.
Higher pKb means weaker base. Aniline (C₆H₅NH₂) has the highest pKb (weakest base) due to resonance, as per the PDF’s basicity section.
Ref: NCERT Class 12 Chemistry > Chapter 13: Amines > Topic: Reaction with Nitrous Acid and Diazonium Salts - Part 2
Aniline (C₆H₅NH₂) is the weakest base due to resonance delocalizing the nitrogen lone pair, reducing basicity, as per the PDF.
Ref: NCERT Class 12 Chemistry > Chapter 13: Amines > Topic: Reaction with Nitrous Acid and Diazonium Salts - Part 2
Ethylamine (CH₃CH₂NH₂), a base, reacts with HCl to form ethylammonium chloride (CH₃CH₂NH₃Cl), as per the PDF’s basicity.
Ref: NCERT Class 12 Chemistry > Chapter 13: Amines > Topic: Reaction with Nitrous Acid and Diazonium Salts - Part 2
Aniline (C₆H₅NH₂) is the weakest due to resonance delocalizing the nitrogen lone pair, reducing basicity, as per the PDF.
Ref: NCERT Class 12 Chemistry > Chapter 13: Amines > Topic: Reaction with Nitrous Acid and Diazonium Salts - Part 1
In the gaseous phase, basicity increases with more alkyl groups due to electron donation: tertiary > secondary > primary, as per the PDF’s basicity section.
Ref: NCERT Class 12 Chemistry > Chapter 13: Amines > Topic: Reaction with Nitrous Acid and Diazonium Salts - Part 1
Tertiary amines like (CH₃CH₂)₃N lack N-H bonds, so their boiling point depends on van der Waals forces, not hydrogen bonding, as per the PDF’s physical properties.
Ref: NCERT Class 12 Chemistry > Chapter 13: Amines > Topic: Reaction with Nitrous Acid and Diazonium Salts - Part 1
Dimethylamine ((CH₃)₂NH), a secondary amine, has one N-H bond to donate and one lone pair to accept, forming two hydrogen bonds, as per the PDF’s solubility.
Ref: NCERT Class 12 Chemistry > Chapter 13: Amines > Topic: Reaction with Nitrous Acid and Diazonium Salts - Part 1
Amines dissolve in water due to hydrogen bonding between N-H bonds or the nitrogen lone pair and water molecules, as per the PDF’s physical properties.
Ref: NCERT Class 12 Chemistry > Chapter 13: Amines > Topic: Chemical Reactions - Carbylamine Reaction and General Reactions
In aqueous solution, secondary amines like (CH₃)₂NH are stronger bases than primary (CH₃NH₂) and ammonia (NH₃) due to solvation and inductive effects, as per the PDF.
Ref: NCERT Class 12 Chemistry > Chapter 13: Amines > Topic: Chemical Reactions - Carbylamine Reaction and General Reactions
Tertiary amines like (CH₃)₃N have no hydrogen atoms on nitrogen, unlike primary (2 H) and secondary (1 H) amines, as per the PDF.
Ref: NCERT Class 12 Chemistry > Chapter 13: Amines > Topic: Physical Properties, Basic Character and Solubility
Tertiary amines like (CH₃CH₂)₃N lack a hydrogen on nitrogen to form sulphonamides with benzenesulphonyl chloride, unlike primary and secondary amines.
Ref: NCERT Class 12 Chemistry > Chapter 13: Amines > Topic: Physical Properties, Basic Character and Solubility
Trimethylamine ((CH₃)₃N) has three electron-donating methyl groups, making it the strongest base in the gaseous phase, as per the PDF.
Ref: NCERT Class 12 Chemistry > Chapter 13: Amines > Topic: Physical Properties, Basic Character and Solubility
