Alcohols, Phenols and Ethers

Arrange the following compounds in increasing order of boiling point. Propan-1-ol, butan-1-ol, butan-2-ol, pentan-1-ol (i) Propan-1-ol, butan-2-ol, butan-1-ol, pentan-1-ol (ii) Propan-1-ol, butan-1-ol, butan-2-ol, pentan-1-ol (iii) Pentan-1-ol, butan-2-ol, butan-1-ol, propan-1-ol (iv) Pentan-1-ol, butan-1-ol, butan-2-ol, propan-1-ol

Option (i) is the answer As the moleculer mass of the alcohol grows, the boiling point rises. Furthermore, $1^0$ alcohols have greater boiling points than $2^0$ alcohols among isomeric alcohols.

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