Edexcel IAL Chemistry 19.9 structural formulae of polymer repeat units

For repeat-unit drawings, keep the correct side groups and trailing bonds, then check whether the monomer pair forms an amide link or an addition backbone.

Exam points

Draw poly(ethenol) or polyamide repeat units with correct side groups and trailing bonds.
Convert monomers into repeat units containing the correct amide linkage.
Calculate percentage by mass from atoms or groups in a displayed repeat unit.

[Maximum number: 1]

This question is about benzene and some of its compounds.

Semi-aromatic polyamides have high melting temperatures, high strength and rigidity and are resistant to chemical attack so they have many applications in engineering.

Draw the repeat unit of the polyamide formed from the monomers shown.
$\mathrm{H}_{2} \mathrm{~N}\left(\mathrm{CH}_{2}\right)_{6} \mathrm{NH}_{2}$ and

Figure for Question 19.9—Draw the structural formulae of the repeat units of the polymers in 19.8 question 1 — Edexcel A-Level Chemistry A2

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19.9—Draw the structural formulae of the repeat units of the polymers in 19.8 question 1