Which of the following pairs of reactants is used to synthesize poly(ethylene terephthalate)?

Question

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Poly(ethylene terephthalate) is synthesized by the combination of ethylene glycol and dimethyl terephthalate, which undergoes a condensation polymerization reaction to form the polymer. Option A (ethylene and dimethyl terephthalate) would not lead to the formation of poly(ethylene terephthalate) without the presence of an additional reactant, such as a catalyst or co-monomer. Option C (ethylene and terephthalic acid) also requires an additional step, such as esterification, to form the dimethyl terephthalate needed for the polymerization reaction. Option D (ethylene glycol and terephthalic acid) also requires an additional step, such as acylation or esterification, to form dimethyl terephthalate before the polymerization reaction.

Which of the Following Pairs of Reactants Is Used to Synthesize