Why are primary amines higher boiling than tertiary amines/?
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In primary amine, RNH2, there are two N-H bond, i. e., 2 hydrogen bonds are present.
In tertiary amine, R3N, there is no H-bond present.
We need high energy to break N-H bonds than N-R bonds. So primary amines have higher boiling point than tertiary amines.
In tertiary amine, R3N, there is no H-bond present.
We need high energy to break N-H bonds than N-R bonds. So primary amines have higher boiling point than tertiary amines.
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Answer:
In primary amines, only one of the hydrogen atoms in the ammonia molecule has been replaced. Mostly in primary amines two hydrogens are present that form a stronger hydrogen bond as compared to tertiary amines hence it has a higher boiling point.
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