Amines 36-37

Question 1

What are amines?

Answer 1

Amines are all derivatives of ammonia.

Question 2

Draw the general structure of primary, secondary and tertiary amines.

Answer 2

Question 3

Give an example of three diffirent types of amine derivatives and their uses in medecine or body functions.

Answer 3

Amphetamine is an amine used to treat daytime drowsiness and chronic fatigue syndrome.

Phenylephrine is an amine commonly used as a decongestant. Phenylelphrine is found in many over-the-counter cold and flu preparations, commonly in combination with paracetamol.

Adrelanine is the ‘flight or fight; amine helping the body to deal with sudden stresses.

Question 4

What sort of smell are amines known for?

Answer 4

fishy smell

Question 5

Why are amines weak bases?

Answer 5

Amines have a nitrogen atom which has a lone pair of electrons that can be used to create a dative covalent bond with a hydrogen atom. Hence it can act as base because it can accpets protons.

Question 6

Write out the reaction of methylamine as a base.

Answer 6

Question 7

Write out the general reaction of amines with acids.

(like base + acid)

Answer 7

base + acid ⇒ salt

Question 8

Write out the reaction of ethylamine with HCl.

Name the product also

Answer 8

CH₃CH₂NH₂(aq) + HCl(aq) → CH₃CH₂NH₃⁺Cl^-(aq)

The product is called ethylammonium chloride.