O-LevelChemistryOrganic Chemistry5070/11 · May/June 2019 · Q401 Mark
The monomer used to manufacture polystyrene is shown. By which type of polymerisation is polystyrene formed and what is a possible partial structure of the polymer?
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Atype of polymerisation: addition, possible partial structure of polymer: Chain of alternating carbons with two hydrogens and carbons with one hydrogen and one hatched group, representing -[CH₂-CH(C₆H₅)]- repeating units.
Btype of polymerisation: addition, possible partial structure of polymer: Chain of alternating carbons with one hydrogen and one hatched group, and carbons with two hydrogens, representing -[CH(C₆H₅)-CH₂]- repeating units.
Ctype of polymerisation: condensation, possible partial structure of polymer: [Diagram of a condensation polymer structure]
Dtype of polymerisation: condensation, possible partial structure of polymer: [Diagram of a condensation polymer structure]
✓ Correct answer
B: type of polymerisation: addition, possible partial structure of polymer: Chain of alternating carbons with one hydrogen and one hatched group, and carbons with two hydrogens, representing -[CH(C₆H₅)-CH₂]- repeating units.
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