Neco 2019 Chemistry Question 29
Practice objective / multiple choice question 29 from the 2019 Neco Chemistry examination.
A step‑growth polymer is formed from equimolar amounts of difunctional monomer A (\(M_{r}=150\ \text{g mol}^{-1}\)) and difunctional monomer B (\(M_{r}=200\ \text{g mol}^{-1}\)). The number‑average degree of polymerisation is 50. After complete depolymerisation, only 85 % of the polymer mass is recovered as the original monomers; the remainder is lost as volatile by‑products. If the initial total mass of monomers used was 10.0 g, calculate the mass of monomer A that is recovered after depolymerisation (in grams).
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About This Question
This is Neco 2019 Chemistry Question 29. It is one of the objective questions from the 2019 Neco Chemistry examination.
Difficulty level: Hard .
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