Neco 2017 Chemistry Question 23
Practice objective / multiple choice question 23 from the 2017 Neco Chemistry examination.
A polymer blend shows a single glass‑transition temperature of 40 \(^{\circ}\)C. The blend consists of polymer A with \(T_{g}=100\) \(^{\circ}\)C and polymer B with \(T_{g}=-20\) \(^{\circ}\)C. Assuming the Fox equation \(\frac{1}{T_{g}}=\frac{w_{A}}{T_{gA}}+\frac{w_{B}}{T_{gB}}\) (temperatures in K), calculate the weight fraction \(w_{A}\) of polymer A in the blend.
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About This Question
This is Neco 2017 Chemistry Question 23. It is one of the objective questions from the 2017 Neco Chemistry examination.
Difficulty level: Hard .
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