Gce Model Questions Vol1 2025 Chemistry Question 18
Practice objective / multiple choice question 18 from the 2025 Gce Model Questions Vol1 Chemistry examination.
A polymer is prepared from a monomer of molar mass \(M_{\text{m}} = 100\ \text{g mol}^{-1}\). In a dilute solution its intrinsic viscosity is measured as \([\eta] = 0.85\ \text{dL g}^{-1}\). The Mark-Houwink relationship is \([\eta] = K\,M_n^{\,a}\) with \(K = 1.5\times10^{-4}\ \text{dL g}^{-1}\) and \(a = 0.75\). Calculate the number‑average molecular weight \(M_n\) of the polymer and the degree of polymerisation (DP).
Answer Options
About This Question
This is Gce Model Questions Vol1 2025 Chemistry Question 18. It is one of the objective questions from the 2025 Gce 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.