
Interpretation:
The structure of acrylonitrile and butadiene is to be drawn and
Concept introduction:
Acrylonitrile and butadiene are monomer units for
These monomer units join together in a large number of units and form a polymer.

Answer to Problem 59A
Structure of acrylonitrile is:
Structure of butadiene is:
Repeating unit when acrylonitrile polymerize:
Polyacrylonitrile
Repeating unit when butadiene polymerize:
Use of polyacrylonitrile: It is used as fibers to make knitting clothes, in sails for yachts.
Use of polybutadiene: Rubber is used in automobiles for making tyres and used as a sealant.
Explanation of Solution
When acrylonitrile is polymerized, it is converted into polyacrylonitrile(PAN).
When the cis-form of butadiene is polymerized, it becomes a natural rubber. It is also called as Gutta-percha.
Uses of PAN are:
- It is used as fibers to make knitting clothes.
- It is used in sails for yachts.
Uses of natural rubber:
- Rubber is used in automobiles for making tyres.
- It is used as a sealant.
Thus, on polymerization, properties of a substance are changed.
Chapter 20 Solutions
World of Chemistry, 3rd edition
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