Question

Write the formula of monomers used in the preparation of dextron.

Answer 1

Dextron is a polymer that is made up of two monomers and when these two monomers combine there is the elimination of water molecules, so it is a product of condensation polymerization. The monomers used for the preparation of dextron are acids, one acid contains 2 carbon atoms and the other contains 3 carbon atoms.

Complete answer:
We know that polymers are those compounds that have high very high molecular mass and a large number of molecules. These molecules are repeated which are known as monomers. As monomers are the smallest units.
The given polymer is Dextron. Dextron is a polymer that is made up of two monomers and when these two monomers combine there is the elimination of water molecules, so it is a product of condensation polymerization.
The monomers used for the preparation of dextron are acids, one acid contains 2 carbon atoms and the other contains 3 carbon atoms. So, one monomer is Lactic acid whose formula is ${{C}_{3}}{{H}_{6}}{{O}_{3}}$ and the other monomer is Glycolic acid whose formula is ${{C}_{2}}{{H}_{4}}{{O}_{3}}$.
The structural formula of Lactic acid is given below:

The structural formula of Glycolic acid is given below:

When they combine with each other, the OH group from the acid of one molecule and the H atom from the hydroxyl group of the other molecule will be removed, and this will form a dextron. The reaction is given below:

Note:
Polymers are formed by two processes, i.e., addition polymerization and condensation polymerization, if the polymer is formed without any loss of molecules then it comes under the addition polymerization.