Question

Classify the following amines as simple/mixed; $1^{o}, 2^{o}, 3^{o}$ and aliphatic or aromatic.

${(C_{2} H_{5})}_{2} NH$

${({CH}_{3})}_{3} N$

$C_{2} H_{5} - NH - {CH}_{3}$

$C_{6} H_{5} - {NH}_{2}$

Accepted Answer

Amines are classified on the basis of the number of hydrogen atoms of ammonia that are replaced by alkyl group. Amines are classified as primary $(1 °)$ , secondary $(2 °)$ and tertiary $(3 °)$ .

Primary amines ( $1 °$ amines): The amines in which only one hydrogen atom of ammonia is replaced by an alkyl group or aryl group are called primary $(1 °)$ amines.

Secondary amines ( $2 °$ amines) : The amines in which two hydrogen atoms of ammonia are replaced by two, same or different alkyl or aryl groups are called secondary $(2 °)$ amines.

Tertiary amines ( $3 °$ amines) : The amines in which all the three hydrogen atoms of ammonia are replaced by three same or different alkyl or aryl groups are called tertiary $(3 °)$ amines.

Aromatic amines are amine compounds in which at least one of the aryl groups is linked to nitrogen. Aliphatic amines are amine compounds with just alkyl groups as a bonding partner for nitrogen.

Amines are classified as follows:

Maharashtra Board Solutions for Chapter: Amines, Exercise 2: Use your brain Power

Maharashtra Board Chemistry Solutions for Exercise - Maharashtra Board Solutions for Chapter: Amines, Exercise 2: Use your brain Power

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