Chapter 4.12, Problem 1QP

(a)

To determine

The repeat unit structure for polychlorotrifluoroethylene polymer.

Answer to Problem 1QP

The repeat unit structure for polychlorotrifluoroethylene polymer is shown in Figure I.

Explanation of Solution

Polychlorotrifluoroethylene polymer consists of one chlorine atom, three fluorine atoms and two carbon atoms.

The formula of ethylene is ${\text{C}}_2{\text{H}}_4$.

Total electrons of outermost orbit in Chlorine and Fluorine is $7$ and in carbon is $4$.

Therefore, the structure of repeat unit is,

Figure I

Conclusion:

The repeat unit of polychlorotrifluoroethylene polymer is shown in Figure I.

(b)

To determine

The repeat unit structure for poly(vinyl alcohol) polymer.

Answer to Problem 1QP

The repeat unit structure for poly(vinyl alcohol polymer is shown in Figure II.

Explanation of Solution

Poly(vinyl alcohol) polymer consists of one hydroxyl group; three hydrogen atoms and two carbon atoms.

The formula of ethylene is ${\text{C}}_2{\text{H}}_4$.

Total electrons of outermost orbit in oxygen, hydrogen and carbon atoms are $6$, $1$ and $4$ respectively.

Therefore, the structure of repeat unit is,

Figure II

Conclusion:

The repeat unit of poly(vinyl alcohol polymer is shown in Figure II