Amines | Class 12 Chemistry Notes | NCERT Chapter 13 PDF

Amines chapter is one of the easiest chapters of class 12 chemistry. Let’s learn the Class 12 Chemistry Chapter 13 Amines Notes as well as Download Amines Class 12 Notes for getting good marks in the board exam. Also, read these chapters of Class 12 Chemistry Notes Pdf. Such as – Haloalkanes and Haloarenes, Alcohol Phenol and Ether as well as Aldehyde Ketone and Carboxylic acid.

Class 12 Chemistry Amines Notes

What are amines or what do you mean by amines?

Amines:- Amines are hydrocarbon compounds in that carbon, hydrogen and nitrogen bond with each other and make a specific structure. Learn it as also, amines are made up of ammonia where the hydrogen atom of ammonia is replaced by an alkyl group or aryl group. The most popular example of amines is amino acids.

Amino acids:- Amino acids are a basic, best and popular example of amines. Amino acids are different and a large part of amines chapter 13 as well as biomolecules chapter which is an important chapter notes for class 12th students.

Classification of Amines Compounds

on the basis of the number of alkyl or aryl groups in amines compounds of class 12th chapter 13 notes. amines are classified into three parts. All three parts of amines are known as primary, secondary as well as tertiary amines. Now, all of us will learn primary, secondary and tertiary amines. Let’s learn the definition and the difference between primary, secondary and tertiary amines of class 12 chapter notes.

Primary amines:- These amines are the very simplest amines. In it, the nitrogen atom of ammonia bonds with an alkyl or aryl group. So, it is known as a primary amine. You should remember these points related to primary amines class 12 chapter 13 notes:-

Properties of Primary amines

  • when the nitrogen atom bonds with one alkyl groups, that compounds are aliphaitic primary amines.
  • when the nitrogen atom bonds with one aryl groups, that compounds are aromatic primary amines.
  • The number of alkyl or aryl group in primary amines is always one.
Primary Amines Example’s NamesPrimary Amines Example’s Structure
Methyl amineCH3-NH2
Ethyl amineCH3-CH2-NH2
Propyl amineCH3-CH2-CH2-NH2
Butyl amineCH3-CH2-CH2-CH2-NH2
PhenylamineC6H5-NH2
Amines Class 12 Notes

Secondary amines:- These amines are the not simplest but not complex amines. In it, the nitrogen atom of ammonia bonds with two alkyl or aryl groups. So, it is known as a secondary amine. You should remember these points related to secondary amines:-

Properties of Secondary amines

  • When the nitrogen atom bonds with two alkyl groups, that compounds are aliphaitic secondary amines.
  • When the nitrogen atom bonds with two aryl groups, that compounds are aromatic secondary amines.
  • The number of alkyl or aryl group in secondary amines is always more than one.
Primary Amines Example’s NamesPrimary Amines Example’s Structure
Di methyl amineCH3-NH-CH3
Di ethyl amineCH3-CH2-NH-CH2-CH3
Di propyl amineC3H7-NH-C3H7
Di phenyl amineC6H5-NH-C6H5
Di benzyl amineC6H5-CH2-NH-CH2-C6H5
Amines Class 12 Notes
Amines-class-12-notes-chemistry-chapter-13-pdf
Amines-class-12-notes-chemistry-chapter-13-pdf

Tertiary amines:- These amines are the not simplest but very complex amines. In it, the nitrogen atom of ammonia bonds with more than two alkyl or aryl groups. So, it is known as a tertiary amine. You should remember these points related to tertiary amines:-

Properties of Tertiary amines

  • When the nitrogen atom bonds with more than two alkyl groups, that compounds are aliphaitic tertiary amines.
  • When the nitrogen atom bonds with more than two aryl groups, that compounds are aromatic tertiary amines.
  • The number of alkyl or aryl group in tertiary amines is always more than two or three.
Tertiary Amines Example’s NamesTertiary Amines Example’s Structure
Tri metyl amine(CH3)3-N
Tri ethyl amine(C2H5)3-N
Tri propyl amine (C3H7)3-N
Tri phenyl amine(C6H5)3-N
Tri benzyl amine(C6H5-CH2)3-N
Amines Class 12 Notes

Difference between Primary, Secondary and Tertiary Amines

PrimarySecondaryTertiary
One alkyl or aryl group is present in it.two alkyl or aryl groups are present in it.three or more alkyl or aryl groups are present in it.
Examples:- CH3-NH2Examples:- CH3-NH-CH3Examples:- (CH3)3-N
Difference between Primary, Secondary and Tertiary Amines

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