Questions focusing on laboratory methods to prepare amines, including Hoffmann bromamide degradation and reduction of nitro compounds.
Tertiary amines like (CH₃CH₂)₃N do not react with HNO₂ to liberate N₂, unlike primary aliphatic amines, as per the PDF.
Ref: NCERT Class 12 Chemistry > Chapter 13: Amines > Topic: Preparation - Hoffmann Bromamide and Reduction of Nitro Compounds
Butan-1-amine (CH₃CH₂CH₂CH₂NH₂) reacts with HNO₂ to form butan-1-ol (CH₃CH₂CH₂CH₂OH) and N₂, as per the PDF.
Ref: NCERT Class 12 Chemistry > Chapter 13: Amines > Topic: Preparation - Hoffmann Bromamide and Reduction of Nitro Compounds
Secondary amines like (CH₃CH₂)₂NH react with HNO₂ to form yellow oily nitrosamines (e.g., (CH₃CH₂)₂N−NO), as described in the PDF’s chemical tests.
Ref: NCERT Class 12 Chemistry > Chapter 13: Amines > Topic: Preparation - Hoffmann Bromamide and Reduction of Nitro Compounds
Reaction with HNO₂ is a chemical property, not a physical one like boiling point or solubility, as per the PDF’s physical properties section.
Ref: NCERT Class 12 Chemistry > Chapter 13: Amines > Topic: Preparation - Hoffmann Bromamide and Reduction of Nitro Compounds
Secondary amines like CH₃CH₂NHCH₃ form nitrosamines (e.g., CH₃CH₂N(NO)CH₃), a yellow oily liquid, with HNO₂, as per the PDF’s chemical properties.
Ref: NCERT Class 12 Chemistry > Chapter 13: Amines > Topic: Preparation - Hoffmann Bromamide and Reduction of Nitro Compounds
Propan-1-amine (CH₃CH₂CH₂NH₂) reacts with HNO₂ to form propan-1-ol (CH₃CH₂CH₂OH) and N₂, as per the PDF’s chemical properties.
Ref: NCERT Class 12 Chemistry > Chapter 13: Amines > Topic: Preparation - Hoffmann Bromamide and Reduction of Nitro Compounds
Tertiary amines like (CH₃CH₂)₃N do not form nitrosamines with HNO₂, unlike secondary amines, as per the PDF’s chemical properties.
Ref: NCERT Class 12 Chemistry > Chapter 13: Amines > Topic: Preparation - Hoffmann Bromamide and Reduction of Nitro Compounds
C₃H₉N has four isomers: propan-1-amine, propan-2-amine, ethylmethylamine, and trimethylamine. Only primary amines (propan-1-amine and propan-2-amine) react with HNO₂ to liberate N₂, so the number is 2.
Ref: NCERT Class 12 Chemistry > Chapter 13: Amines > Topic: Preparation - Hoffmann Bromamide and Reduction of Nitro Compounds
The nitrous acid test (HNO₂) with primary aliphatic amines produces an alcohol and N₂ gas, as per the PDF’s chemical properties.
Ref: NCERT Class 12 Chemistry > Chapter 13: Amines > Topic: Preparation - Hoffmann Bromamide and Reduction of Nitro Compounds
Methylamine (CH₃NH₂) reacts with HNO₂ to form methanol (CH₃OH) and N₂, as per the PDF’s chemical properties.
Ref: NCERT Class 12 Chemistry > Chapter 13: Amines > Topic: Preparation - Hoffmann Bromamide and Reduction of Nitro Compounds
Ethylamine (CH₃CH₂NH₂) reacts with HNO₂ to produce ethanol (CH₃CH₂OH) and nitrogen gas, as per the PDF’s chemical properties.
Ref: NCERT Class 12 Chemistry > Chapter 13: Amines > Topic: Preparation - Hoffmann Bromamide and Reduction of Nitro Compounds
Primary aliphatic amines like CH₃CH₂CH₂NH₂ react with HNO₂ to form alcohols (e.g., propan-1-ol) and N₂, as described in the PDF’s chemical properties.
Ref: NCERT Class 12 Chemistry > Chapter 13: Amines > Topic: Preparation - Hoffmann Bromamide and Reduction of Nitro Compounds
