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Amines are derivatives of ammonia and are classified as `1^@, 2^@ , and 3^@` Primary and secondary (but not teritary amines) form intermolecular hydrogen bonds and thus they boil at higher temperature than expected.Like ammonia, all amines are basic, although they differ in their basic nature.As amines are considered as derivatives of ammonia, quatemary ammonium salts are considered as derivatives of ammonium salts.Only the quatemary ammonium salts can show optical activity. Which of the following statement is correct ?A. All classes of amines form hydrogen bonds with each otherB. Only primary and secondary amines form hydrogen bonds with waterC. All classes of amines can form hydrogen bonds with waterD. All amines are completely soluble in water |
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Answer» Correct Answer - C All amine have a loan pair of electrons on N which enables them to form H-bond.However, tertiary amines although can form H-bond with water or other hydroxylic solvents, it does not form H-bond with its second molecule because of absence of H on N.only lower amines (`1^@,2^@` as well as `3^@`)are quite soluble in water solubility in water decreases with the increase in the size of the alkyl group. |
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