12th Grade IB Chemistry

Condensation Reactions

IB Chemistry Power Points

Topic 20Organic Chemistry

www.pedagogics.caCondensation Reactions Big IdeaTwo smaller molecules combine to form one larger molecule.

A small molecule (usually water, is eliminated in the process)

2Condensation Reactions Big IdeaTwo smaller molecules combine to form one larger molecule.

A small molecule (usually water, is eliminated in the process)

3

Condensation Reactions Big IdeaTwo smaller molecules combine to form one larger molecule.

A small molecule (usually water, is eliminated in the process)

4Esterification RCOOH + ROHEsters have distinct fruity smells.

Used extensively in industry for fragrance and flavoring.

The esterification reaction is also important in formation of polymers

5Amide formation - RCOOH + RNH2

6

Condensation PolymerizationRecall polymers are long chains of subunits called monomers.

If reacting molecules each have two functional groups that can undergo condensation, a polymer chain can form.

Consider:

ethane-1,2-diol andbenzene-1,4-(ethylene glycol)dicarboxylic acid

7Formation of Terylene (Dacron)

Monomer subunit would look like this.

8Formation of Terylene (Dacron)

+ a bunch of H2O9Polymerization reactions nylon 6,6H2N(CH2)6NH21,6 diamino - hexaneHOOC(CH2)4COOHhexan dioic acid+

10Polymerization reactions nylon 6,6

11Proteins - polypeptidesGeneral formula of an amino acid monomer

12