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Chapter 12: Problem 87

An addition polymerization forms the polymer originally used as Saran" wrap. It has the following structure \(+\mathrm{CCl}_{2}-\mathrm{CH}_{2} \mathrm{J}_{n} .\) Draw the structure of the monomer.

Short Answer

Expert verified
The monomer used in the addition polymerization to form the given polymer has the structure \(\mathrm{CH}_{2}=\mathrm{CCl}_{2}\). The repeating unit in the polymer is \(\mathrm{CCl}_{2}\mathrm{CH}_{2}\). The monomer's structure can be drawn as: ``` H Cl \ / C=C / \ H Cl ```

Step by step solution

01

Identify the repeating unit in the polymer

The given polymer structure is \(+\mathrm{CCl}_{2}-\mathrm{CH}_{2}\mathrm{J}_{n}\). The repeating unit in this polymer is \(\mathrm{CCl}_{2}\mathrm{CH}_{2}\). This unit is present 'n' number of times in the polymer chain.
02

Determine the structure of the monomer

To find the structure of the monomer, we need to look at the repeating unit in the polymer and figure out which molecule would undergo addition polymerization to create this repeating unit. We can see that there is one carbon atom with two chlorine atoms attached (CCl2) and another carbon atom with two hydrogen atoms attached (CH2). The monomer would be formed by "splitting" this repeating unit such that one bond of each carbon atom is free for polymerization. Therefore, the monomer would contain a double bond between two carbon atoms, one with two hydrogen atoms and the other with two chlorine atoms. Hence, the monomer's structure will be \(\mathrm{CH}_{2}=\mathrm{CCl}_{2}\).
03

Draw the structure of the monomer

Based on the determined structure \(\mathrm{CH}_{2}=\mathrm{CCl}_{2}\), we can now draw the monomer: ``` H Cl \ / C=C / \ H Cl ``` This is the structure of the monomer that undergoes addition polymerization to create the polymer originally used as Saran wrap.

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