Chapter 21, Problem 78E

(a)

Interpretation Introduction

Interpretation:

The systematic name for isoprene needs to be determined.

Concept Introduction :

Small units of organic molecules called as monomers can link or react with each other to form large molecules called polymers. As it has various functional groups attached, it forms chemical bonds with other monomers. When same monomer units are repeated, it forms homopolymers and if two or more than two monomers link, it forms copolymers.

(b)

Interpretation Introduction

Interpretation:

The structure of natural rubber and gutta percha with three repeating units of the monomer and configuration around carbon-carbon double bonds needs to be determined.

Concept Introduction :

Monomers are small units of organic molecules that link with other monomer to form long chain bigger molecules called polymers. The monomers have the special feature of functionality that allows formation of chemical bonds with other monomers. Isoprene polymerizes to give polyisoprene.