Condensation Reactions IB Chemistry Power Points Topic 20 Organic Chemistry

Condensation Reactions – Big Idea Two smaller molecules combine to form one larger molecule. A small molecule (usually water, is eliminated in the process)

Condensation Reactions – Big Idea Two smaller molecules combine to form one larger molecule. A small molecule (usually water, is eliminated in the process)

Condensation Reactions – Big Idea Two smaller molecules combine to form one larger molecule. A small molecule (usually water, is eliminated in the process)

Esterification – RCOOH + ROH Esters have distinct fruity smells. Used extensively in industry for fragrance and flavoring. The esterification reaction is also important in formation of polymers

Amide formation - RCOOH + RNH 2

Condensation Polymerization Recall – 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

Formation of Terylene (Dacron) Monomer subunit would look like this.

Formation of Terylene (Dacron) + a bunch of H 2 O

Polymerization reactions – nylon 6,6 H 2 N(CH 2 ) 6 NH 2 1,6 diamino - hexane HOOC(CH 2 ) 4 COOHhexan – dioic acid +

Polymerization reactions – nylon 6,6

Proteins - polypeptides General formula of an amino acid monomer