Waec Model Questions Vol1 2020 Chemistry Question 24

Practice objective / multiple choice question 24 from the 2020 Waec Model Questions Vol1 Chemistry examination.

Waec Model Questions Vol1 2020 Chemistry Objective / Multiple Choice Hard Difficulty
Question 24 WAEC_MODEL_QUESTIONS_VOL1 • 2020 • CHEMISTRY • objective

A 5.00 g sample of a commercial alcohol mixture contains 60.0 % (w/w) 2‑butanol and the remainder tert‑butanol. The mixture is dehydrated with concentrated H₂SO₄, giving the corresponding alkenes (1‑butene from 2‑butanol and isobutene from tert‑butanol). Assuming complete conversion of each alcohol present, calculate the overall percentage yield of the dehydration reaction if the combined mass of alkenes obtained is 6.50 g.

Answer Options

Correct Answer A. 86 % (overall dehydration yield)
B. 92 % (overall dehydration yield)
C. 78 % (overall dehydration yield)
D. 80 % (overall dehydration yield)
Correct Answer
A
Correct Option:
86 % (overall dehydration yield)

About This Question

This is Waec Model Questions Vol1 2020 Chemistry Question 24. It is a objective / multiple choice question from the 2020 Waec Model Questions Vol1 Chemistry examination.

Difficulty level: Hard .

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