JAMB Chemistry 2008 Objective — Question 46

Question 46 of 50 from the Joint Admissions and Matriculation Board (JAMB) Chemistry 2008 Objective paper, with the correct answer and a full explanation.

CH3-C(OH)(CH3)-CH2-CH3. The major product of the dehydration of the above compound is

A. CH3-C(=CH2)-CH2-CH3
B. CH3-CH=CH-CH3Correct
C. CH3-C(=CH-CH3)-CH3
D. CH3-C(H)(CH2-CH3)-CH3

Explanation

(2methylbutan-2-ol). To get the major product of the dehydration of an alkanol, we remove the hydroxyl group and one hydrogen atom from the adjacent carbon atom that has less hydrogen atoms. For the structure above: the major product is CH3-C=CH-CH3 with CH3 branch (2-methylbut-2-en).

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