Ethanol, propanol, and methanol are three simple alcohols. They can be grouped together because they all share the same hydroxyl group.
A hydroxyl group is a functional group consisting of an oxygen atom that is covalently bonded to a hydrogen atom. The oxygen atom consists of two lone pair of electrons. Hydroxyl group is chemically represented as -OH.
Alcohols, Sugar and carboxylic acids usually contain hydroxyl groups. All the alcohol have the same functional group which is why they are represented by the formula ROH. Here R is an alkyl group and OH is a hydroxyl group.
Alcohols are formed when this group is added to an organic compound.
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