^{Question: Give both the IUPAC name and the common name for each alcohol.}

^(a)

^(b)

^(c)

^(d)

The longest chain comprising the carbon atom is named first during the compound naming. A suffix of –ol is provided to name alcohols. The hydroxyl groups include greater preference than the double and triple bonds.

The common name of particular alcohol is acquired from the alkyl group’s common name and the term alcohol. IUPAC names are common names if the molecule possesses a complex structure.

(a) The longest carbon chain comprises three carbon atoms and is saturated in the given compound. So the carbon chain is propane. The OH group is found at the second carbon.

Hence, remove –e from propane and add –ol as the suffix. Since the –OH group is on the second carbon, the compound’s name is propan-2-ol.

The naming of compound A

The IUPAC name of the compound is propan-2-ol.

The common name of the compound is isopropyl alcohol.

(b) In the given compound, the longest chain comprises four carbon atoms in the form of a ring. So the carbon chain is cyclobutane. The OH group is found at the first carbon atom. Hence, the name of the compound is cyclobutanol.