Addition polymers and repeating units

Draw the repeating unit of an addition polymer from the structure of an alkene monomer, work back from a section of polymer chain to the monomer, and recognise common examples such as polyethene, PVC and polystyrene.

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Zadanie 3cPaper 2, maj 2026
wzorowane5 pktotwarteśrednie (szac.)

Pentan-2-ol can form by reacting pent-1-ene with water in the presence of an acid catalyst. CHX2=CHCHX2CHX2CHX3(g)+HX2O(l)CHX3CH(OH)CHX2CHX2CHX3(aq)\ce{CH2=CHCH2CH2CH3(g) + H2O(l) -> CH3CH(OH)CH2CH2CH3(aq)} ΔH=84 kJmol1\Delta H^\ominus = -84\ \mathrm{kJ\,mol^{-1}} (i) Explain why increasing the temperature would increase…

Zadanie 10Paper 1A, maj 2025, TZ2
wzorowane1 pktzamknięteśrednie (szac.)

Which monomer produces this addition polymer? A. CHX2=CHCHX2CHX3\ce{CH2=CHCH2CH3} B. CHX3CH=CHCHX3\ce{CH3CH=CHCH3} C. CHX2=C(CHX3)X2\ce{CH2=C(CH3)2} D. CHX2=CHCH=CHX2\ce{CH2=CHCH=CH2}

Zadanie 10Paper 1A, specimen 2025
wzorowane1 pktzamknięteśrednie (szac.)

Which structure shows the repeating unit of the addition polymer formed from pent-1-ene? A. [CHX2CHX2CH(CHX2CHX3)]Xn\ce{[CH2-CH2-CH(CH2CH3)]_n} B. [CH(CHX3)CH(CHX2CHX3)]Xn\ce{[CH(CH3)-CH(CH2CH3)]_n} C. [CHX2CH(CHX2CHX2CHX3)]Xn\ce{[CH2-CH(CH2CH2CH3)]_n} D. [CHX2C(CHX3)(CHX2CHX3)]Xn\ce{[CH2-C(CH3)(CH2CH3)]_n}

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