Gce Model Questions Vol1 2023 Chemistry Question 20
Practice objective / multiple choice question 20 from the 2023 Gce Model Questions Vol1 Chemistry examination.
A polymer solution at \(25^{\circ}\text{C}\) has an intrinsic viscosity of \([\eta] = 0.85\ \text{dL g}^{-1}\). The Mark-Houwink parameters for this polymer are \(K = 1.2 \times 10^{-3}\ \text{dL g}^{-1}\) and \(a = 0.75\). (i) Calculate the viscosity‑average molecular weight \(M_v\) of the polymer. (ii) A film requires a minimum \(M_v\) of \(1.0 \times 10^{5}\ \text{g mol}^{-1}\). State whether this polymer meets the requirement.
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This is Gce Model Questions Vol1 2023 Chemistry Question 20. It is one of the objective questions from the 2023 Gce Model Questions Vol1 Chemistry examination.
Difficulty level: Hard .
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