21 public questions tagged with this topic.
Hoffmann bromamide reaction converts CH₃CH₂CONH₂ (propanamide) to CH₃CH₂NH₂ (ethylamine), reducing the carbon chain by one, as per the PDF.
Ref: NCERT Class 12 Chemistry > Chapter 13: Amines > Topic: Chemical Reactions of Amines - Mixed Concept Practice
Pentanamide (CH₃CH₂CH₂CH₂CONH₂, 5 carbons) loses one carbon in the Hoffmann reaction, yielding CH₃CH₂CH₂CH₂NH₂ (4 carbons), as per the PDF.
Ref: NCERT Class 12 Chemistry > Chapter 13: Amines > Topic: Chemical Reactions of Amines - Mixed Concept Practice
Ethanamide (CH₃CONH₂) loses one carbon in the Hoffmann reaction to form methylamine (CH₃NH₂), as per the PDF.
Ref: NCERT Class 12 Chemistry > Chapter 13: Amines > Topic: Chemical Reactions of Amines - Mixed Concept Practice
As per the PDF, solubility decreases with increasing alkyl chain length due to the growing hydrophobic nature, reducing hydrogen bonding with water.
Ref: NCERT Class 12 Chemistry > Chapter 13: Amines > Topic: Reaction with Nitrous Acid and Diazonium Salts - Part 1
For similar molecular weights, primary > secondary > tertiary due to decreasing hydrogen bonding, as per the PDF’s physical properties (e.g., CH₃CH₂NH₂ > (CH₃)₂NH > (CH₃)₃N).
Ref: NCERT Class 12 Chemistry > Chapter 13: Amines > Topic: Reaction with Nitrous Acid and Diazonium Salts - Part 1
Primary amines like CH₃CH₂NH₂ have two N-H bonds to donate and one lone pair to accept, allowing up to two hydrogen bonds donated, as per the PDF’s solubility.
Ref: NCERT Class 12 Chemistry > Chapter 13: Amines > Topic: Reaction with Nitrous Acid and Diazonium Salts - Part 1
Primary amines like CH₃CH₂CH₂NH₂ have higher boiling points due to extensive hydrogen bonding compared to secondary and tertiary amines, as per the PDF.
Ref: NCERT Class 12 Chemistry > Chapter 13: Amines > Topic: Reaction with Nitrous Acid and Diazonium Salts - Part 1
Primary amines like CH₃CH₂CH₂NH₂ have stronger hydrogen bonding than secondary or tertiary amines, leading to a higher boiling point, as per the PDF.
Ref: NCERT Class 12 Chemistry > Chapter 13: Amines > Topic: Reaction with Nitrous Acid and Diazonium Salts - Part 1
The compound has a four-carbon chain with an amine group on the first carbon, named butan-1-amine, as per the PDF’s nomenclature.
Ref: NCERT Class 12 Chemistry > Chapter 13: Amines > Topic: Chemical Reactions - Carbylamine Reaction and General Reactions
The compound has a two-carbon chain with an amino group on the first carbon. In IUPAC nomenclature, primary amines are named as alkanamines by replacing the 'e' of the alkane with 'amine'. Thus, CH₃CH₂NH₂ is ethanamine.
Ref: NCERT Class 12 Chemistry > Chapter 13: Amines > Topic: Chemical Reactions - Carbylamine Reaction and General Reactions
Tertiary amines like (CH₃CH₂)₃N lack an N-H bond and do not react with C₆H₅SO₂Cl to form a sulphonamide salt, as per the PDF.
Ref: NCERT Class 12 Chemistry > Chapter 13: Amines > Topic: Chemical Reactions - Carbylamine Reaction and General Reactions
Methylamine (CH₃NH₂) has the smallest alkyl group (1 carbon) among the options, giving it the lowest molecular weight, as per the PDF’s classification.
Ref: NCERT Class 12 Chemistry > Chapter 13: Amines > Topic: Chemical Reactions - Carbylamine Reaction and General Reactions
