Example of alcohol used
a diol (alcohol with 2 OH groups)
Name: ethan-1,2-diol
Example of acid used
a dicarboxylic acid (acid with two COOH groups)
Name: dipropanoic acid
Step 1
The H from the alcohol combines with the OH from the acid, and water is produced (eliminated from the organic system of molecules)
Step 2
The alcohol and acid then join at that point.
Step 3
Notice that the alcohol and acid are repeating in the molecule.
Step 4
The polymer, which is a polyester.
polyester
Water would be the by-product.