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Nylon 6,6 is a polyamide formed by the condensation reaction between which pair of monomers?

1. HOOC(CH2)4COOH + H2NC6H4NH2
2. HOOC(CH2)4COOH + H2N(CH2)6NH2
3. HOOC(CH2)6COOH + H2N(CH2)6NH2
4. p-HOOCC6H4COOH + H2N(CH2)6NH2

Correct answer: HOOC(CH2)4COOH + H2N(CH2)6NH2

Solution

Nylon 6,6 is synthesized from hexamethylenediamine and adipic acid, which corresponds to the monomers in option B. The condensation reaction between these two compounds forms the polyamide structure characteristic of Nylon 6,6.

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