Waec Model Questions Vol1 2025 Chemistry Question 9
Practice objective / multiple choice question 9 from the 2025 Waec Model Questions Vol1 Chemistry examination.
A 100 mL equimolar mixture of the four C₄H₁₀O isomers (n‑butanol, sec‑butanol, isobutanol, tert‑butanol) is subjected to fractional distillation. The boiling points are: n‑butanol 117.7 °C, sec‑butanol 99.5 °C, isobutanol 108 °C, tert‑butanol 82 °C. The temperature of the vapor phase when the first 25 % of the distillate (by volume) is collected is 105 °C. Which isomer(s) are present in that first fraction?
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About This Question
This is Waec Model Questions Vol1 2025 Chemistry Question 9. It is a objective / multiple choice question from the 2025 Waec Model Questions Vol1 Chemistry examination.
Difficulty level: Hard .
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