12. Which atoms or group of atoms make up the functional group of ethanol (CH3CH2OH)? A. the hydroxyl group (-OH)

B. the carbon atoms

C. the ethyl group (CH3CH2-)

D. the hydrogen atoms

Option A. the hydroxyl group (-OH)

Explanation:

Ethanol, CH₃CH₂OH belongs to the class of organic compound called alkanol.

They have general formula as R–OH

Where

R => is an alkyl group

OH => is the hydroxyl group

The hydroxyl group (OH) is the functional group of the alkanol (alcohol)