Question

How can we distinguished between primary amine and secondary amines?

Answer 1

The main difference between primary secondary and tertiary amines is that, in primary amines, one alkyl or aryl group is attached to the nitrogen atom and in secondary amines, two alkyl or aryl groups are attached to the nitrogen atom whereas, in tertiaryamines, three alkyl or aryl groups are attached to the nitrogen .


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Answer 2

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here is your answer

Primary amines are amines containing one alkyl or aryl group attached to the nitrogen atom. An ammonia molecule has three hydrogen atoms bonded to a central nitrogen atom. But one of these hydrogen atoms in a primary amine is replaced by an alkyl or aryl group. An alkyl group is a functional group that can be found in organic molecules. 

Secondary amines are amines containing two alkyl or aryl group attached to the nitrogen atom. Secondary amines are formed by replacement of two hydrogen atoms of ammonia molecule by alkyl or aryl groups.

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