Neco Model Questions Vol1 2021 Chemistry Question 42
Practice objective / multiple choice question 42 from the 2021 Neco Model Questions Vol1 Chemistry examination.
A polymer sample shows an intrinsic viscosity \([\eta] = 0.85\ \text{dL g}^{-1}\) in a given solvent. The Mark-Houwink parameters for this polymer‑solvent system are \(K = 1.2 \times 10^{-3}\ \text{dL g}^{-1}\) and \(a = 0.72\). The monomer has a molar mass of \(100\ \text{g mol}^{-1}\). (i) Calculate the viscosity‑average molecular weight \(M_v\) of the polymer. (ii) Determine the average degree of polymerization (DP).
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This is Neco Model Questions Vol1 2021 Chemistry Question 42. It is one of the objective questions from the 2021 Neco Model Questions Vol1 Chemistry examination.
Difficulty level: Hard .
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