Organic Chemistry Module 4

Question 1

Homologous series

Answer 1

Has the same functional group and general formula

Question 2

Aliphatic

Answer 2

Straight chains and non-aromatic rings

Question 3

Aromatic

Answer 3

Benzene ring

Question 4

Boiling point of alkane

Answer 4

• The longer the carbon chain, the stronger the induced dipole dipole forces as there is more surface contact and more electrons to interact.
• Longer carbon chain = greater boiling point
• Branched chains have lower boiling points as they have weaker induced dipole dipole forces as there is less surface contact/ can’t pack closely together.

Question 5

Why are alkanes good fuels?

Answer 5

Because they release a lot of energy when they burn

Question 6

Radicals

Answer 6

Unpaired electron

Question 7

Electrophile

Answer 7

Electron- pair acceptor

Question 8

Cracking

Answer 8

Used as organic feedstock to make new chemicals and plastics