Igcse Model Questions Vol1 2024 Chemistry Question 31
Practice objective / multiple choice question 31 from the 2024 Igcse Model Questions Vol1 Chemistry examination.
Elemental analysis of a copolymer gives mass percentages C = 51.0 %, H = 8.5 %, O = 40.5 %. The polymer is composed only of repeat units derived from monomer X (C₂H₄O, Mₓ = 44 g mol⁻¹) and monomer Y (C₃H₆O₂, Mᵧ = 74 g mol⁻¹). Assuming a random arrangement of units, determine (a) the mole fraction of monomer Y in the polymer (to three significant figures) and (b) the average molar mass of a repeat unit (to one decimal place).
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This is Igcse Model Questions Vol1 2024 Chemistry Question 31. It is one of the objective questions from the 2024 Igcse Model Questions Vol1 Chemistry examination.
Difficulty level: Hard .
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