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JAMB Chemistry 2016 Paper

Question : 23

Total: 50

Alkanols have the general molecular formula

Solution:

Concept:

Alkanols are saturated alcohols, derived from alkanes by replacing one hydrogen with a hydroxyl group.

Explanation:

The general formula for an alkane is

\mathrm{C}_n\mathrm{H}_{2n+2}

Replacing one

\mathrm{H}

atom with an

\mathrm{OH}

group gives the alkanol formula:

\mathrm{C}_n\mathrm{H}_{2n+1}\mathrm{OH}

This matches option D.

Answer:

\mathrm{C}_n\mathrm{H}_{2n+1}\mathrm{OH}

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