JAMB Mathematics 2022 Objective — Question 16

Question 16 of 41 from the Joint Admissions and Matriculation Board (JAMB) Mathematics 2022 Objective paper, with the correct answer and a full explanation.

Ethanol reacts with concentrated tetraoxosulphate(vi) acid at a temperature above 170°C to form

A. Ethanal
B. Ethanone
C. EtheneCorrect
D. Ethyne

Explanation

At ~170°C with conc. H₂SO₄ (excess acid), ethanol undergoes dehydration to form ethene: CH₃CH₂OH → CH₂=CH₂ + H₂O. (At ~140°C with excess alcohol, ethoxyethane forms.)

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