Neco Model Questions Vol1 2019 Chemistry Question 32
Practice objective / multiple choice question 32 from the 2019 Neco Model Questions Vol1 Chemistry examination.
A condensation polymer is prepared from a diacid of molar mass 120 g·mol\(^{-1}\) and a diol of molar mass 180 g·mol\(^{-1}\). Initially 0.500 mol of each monomer are placed in the reactor. The reaction proceeds to 80 % conversion (by extent of reaction) with no side reactions. (a) Calculate the number‑average molecular weight \(M_n\) of the polymer obtained. (b) Determine the weight fraction of unreacted monomers present in the isolated product.
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This is Neco Model Questions Vol1 2019 Chemistry Question 32. It is one of the objective questions from the 2019 Neco Model Questions Vol1 Chemistry examination.
Difficulty level: Hard .
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