Question

What is a general representation of a secondary amine?

Answer 1

Amines are organic compound obtained from ammonia by replacement of one or more hydrogen atoms by organic groups. If one of the 'H' atom of NH3 is replace by R = alkyl group, they are referred as primary amine. If two 'H' atoms of NH3 are replace by same or different alkyl group, they are referred as secondary amine.

Answer 2

Answer: general representation of a secondary amine is $R_2NH$ .

Explanation: Ammonia is $NH_3$ . When one or more H atoms of ammonia molecule are replaced by alkyl groups then the newly formed compounds are known as amines.

If one of the H atom from ammonia molecule is replaced by an alkyl group then we call it primary amine. It's written as $RNH_2$ .

If two H atoms of ammonia molecule are replaced by same or different alkyl groups then we call it secondary amine. It's written as $R_2NH$  and if all the three H atoms of ammonia molecule are replaced by same or different alkyl groups then we call it tertiary amine. It is written as $R_3N$ .

So, the general representation of a secondary amine is $R_2NH$ .