Igcse Model Questions Vol1 2023 Chemistry Question 29
Practice objective / multiple choice question 29 from the 2023 Igcse Model Questions Vol1 Chemistry examination.
Nylon‑6,6 is produced by condensation of adipic acid (\(\mathrm{C_6H_{10}O_4}\), molar mass 146 g mol\(^{-1}\)) with hexamethylenediamine (\(\mathrm{C_6H_{16}N_2}\), molar mass 116 g mol\(^{-1}\)). Each repeat unit of the polymer is formed by joining one molecule of each monomer and eliminating two molecules of water (\(2 \times 18\) g mol\(^{-1}\)). a) Calculate the molar mass of the repeat unit of nylon‑6,6. b) A sample of nylon‑6,6 has a number‑average molecular weight (\(M_n\)) of 45 200 g mol\(^{-1}\). Using the repeat‑unit mass from part (a), determine the degree of polymerisation (the number of repeat units in an average polymer chain).
Answer Options
About This Question
This is Igcse Model Questions Vol1 2023 Chemistry Question 29. It is one of the objective questions from the 2023 Igcse Model Questions Vol1 Chemistry examination.
Difficulty level: Hard .
Master the Exam!
You've seen a preview, but there are thousands more questions plus AI tutor to break down complex solutions.