WAEC Chemistry 2023 Objective — Question 48
Question 48 of 50 from the West African Examinations Council (WAEC) Chemistry 2023 Objective paper, with the correct answer and a full explanation.
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The vapour density of an organic compound with the molecular formula C2H4O2 is [H=1.0, C=12.0, O=16.0]
- A. 120
- B. 65
- C. 40
- D. 30Correct
Explanation
C2H4O2 = (12×2)+(1×4)+(16×2) = 60. Vapour density = ½ × RMM = ½ × 60 = 30.
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