IMF in organic chemistry

ORGANIC CHEMISTRY

Physical properties

Melting point, boiling point, solubility, etc

hydroxyl and carboxyl groups ( OH )

• Hydrogen bonding

• Polar molecules

• The more functional groups there are, the stronger the IMF

• Carboxyl group can form more hydrogen bonds than Hydroxyl groups

Haloalkanes and esters

• Dipole Dipole

• Polar molecules

• Weaker than hydrogen bonds but stronger than London forces

• Stronger IMF, Higher melting/boiling points

Alkanes and Alkenes

• London Forces

• None polar molecules

• More C chains, higher melting/boiling points

NOTE:

Gas - Low IMF

Liquid - Medium IMF

Solid - High IMF

Straight molecule = higher IMF ( big surface area )

Branched molecule = Lower IMF ( small surface area )