Waec Model Questions Vol1 2023 Chemistry Question 11
Practice objective / multiple choice question 11 from the 2023 Waec Model Questions Vol1 Chemistry examination.
A 0.500 g sample of polyethylene (-CH₂-)ₙ is dissolved in 100.0 g of benzene (K_f = 5.12 K·kg·mol⁻¹). The freezing point of pure benzene is 5.53 °C and the solution freezes at 5.48 °C. Assuming ideal behaviour, calculate the average degree of polymerisation (n) of the polyethylene sample. Give the nearest whole number.
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This is Waec Model Questions Vol1 2023 Chemistry Question 11. It is one of the objective questions from the 2023 Waec Model Questions Vol1 Chemistry examination.
Difficulty level: Hard .
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