Unit 2-Ethers

Question 1

What is the general structure of an ether?

Answer 1

R’–O–R’’

Question 2

How are ethers named?

Answer 2

As alkoxyalkanes.
The smaller group becomes the alkoxy substituent.
The longer chain gives the alkane name.

Question 3

Name this ether
CH₃-O-CH₂CH₃

Answer 3

Methoxyethane

Question 4

Name this ether
CH₃CH₂CH₂-O-CH₂CH₃

Answer 4

Ethoxypropane

Question 5

How are ethers prepared?

Answer 5

Nucleophilic substitution of a monohaloalkane with an alkoxide.

Question 6

Why do ethers have lower boiling points than isomeric alcohols?

Answer 6

They cannot hydrogen bond with each other.

Question 7

Can ethers hydrogen‑bond with each other?

Answer 7

No, does not have H to FON

Question 8

Can ethers hydrogen bond with water?

Answer 8

Yes, the oxygen lone pairs accept hydrogen bonds.

Question 9

How does ether solubility change with size?

Answer 9

Solubility decreases as molecular size increases.

Question 10

Why are ethers useful as solvents?

Answer 10

They are relatively inert and dissolve many organic compounds.