O-LevelChemistryOrganic Chemistry5070/11 · Oct/Nov 2018 · Q401 Mark
Poly(styrene) is an addition polymer. The partial structure of poly(styrene) is shown. What is the formula of the monomer from which poly(styrene) is made?
This question uses a diagram from the original paper, which isn't shown here. Open the full paper from the past papers archive to see it.
AStructure showing a C-C single bond, with one C bonded to C₆H₅ and H, and the other C bonded to two H atoms (representing a saturated unit of the polymer).
BStructure showing a C=C double bond, with one C bonded to C₆H₅ and H, and the other C bonded to two H atoms (representing the styrene monomer).
CStructure showing a C-C single bond, with one C bonded to C₆H₅ and H, and the other C bonded to a C=C group (representing an incorrect monomer structure).
DStructure showing a C=C double bond, with each C bonded to a C₆H₅ group and a H atom (representing 1,2-diphenylethene).
✓ Correct answer
B: Structure showing a C=C double bond, with one C bonded to C₆H₅ and H, and the other C bonded to two H atoms (representing the styrene monomer).
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