Waec Model Questions Vol1 2021 Chemistry Question 48
Practice objective / multiple choice question 48 from the 2021 Waec Model Questions Vol1 Chemistry examination.
Polymer A is prepared from monomer M (molar mass = 100 g mol⁻¹). A 5.0 g sample of polymer A contains 0.025 mol of monomer units and 5.0 × 10⁻⁵ mol of polymer molecules.\n(a) Calculate the degree of polymerisation (DP) of polymer A.\n(b) Using the Mark-Houwink equation [η] = K M^a with K = 1.2 × 10⁻³ dL g⁻¹ and a = 0.75, determine the intrinsic viscosity [η] of polymer A.\n(c) Polymer B is formed from the same monomer but has twice the DP of polymer A. Calculate the ratio of the intrinsic viscosity of polymer B to that of polymer A.
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This is Waec Model Questions Vol1 2021 Chemistry Question 48. It is one of the objective questions from the 2021 Waec Model Questions Vol1 Chemistry examination.
Difficulty level: Hard .
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