Neco Model Questions Vol1 2020 Chemistry Question 49
Practice objective / multiple choice question 49 from the 2020 Neco Model Questions Vol1 Chemistry examination.
In the condensation polymerisation of adipic acid (C₆H₁₀O₄, M = 146 g mol⁻¹) with hexamethylenediamine (C₆H₁₆N₂, M = 116 g mol⁻¹) an equimolar mixture is used. Each condensation step eliminates one molecule of water (M = 18 g mol⁻¹). The resulting polymer has a number‑average molecular weight of 12 200 g mol⁻¹. (i) Calculate the average degree of polymerisation (DP). (ii) Determine the mass percentages of the two monomer units in the polymer. (iii) Identify the type of polymer formed.
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This is Neco Model Questions Vol1 2020 Chemistry Question 49. It is one of the objective questions from the 2020 Neco Model Questions Vol1 Chemistry examination.
Difficulty level: Hard .
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