Which polymer's monomer has the formula C2H3Cl?

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Multiple Choice

Which polymer's monomer has the formula C2H3Cl?

Explanation:
The concept is identifying the monomer from which a polymer is made. PVC comes from the vinyl chloride monomer, CH2=CHCl, which has the formula C2H3Cl. When this double bond opens in polymerization, the repeating unit in PVC is -CH2-CHCl-, so the monomer’s formula directly matches C2H3Cl. The other polymers use monomers without chlorine: ethene (C2H4) for polythene, propene (C3H6) for polypropene, and styrene (C8H8) for polystyrene. Therefore, the monomer with formula C2H3Cl is vinyl chloride, leading to PVC.

The concept is identifying the monomer from which a polymer is made. PVC comes from the vinyl chloride monomer, CH2=CHCl, which has the formula C2H3Cl. When this double bond opens in polymerization, the repeating unit in PVC is -CH2-CHCl-, so the monomer’s formula directly matches C2H3Cl. The other polymers use monomers without chlorine: ethene (C2H4) for polythene, propene (C3H6) for polypropene, and styrene (C8H8) for polystyrene. Therefore, the monomer with formula C2H3Cl is vinyl chloride, leading to PVC.

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