Predict the boiling points (lowest to highest) of Butan-1-ol, 2-methylpropane and Butane

Butan-1-ol will have the highest boiling point of all 3 as it has Hydrogen bonds acting between molecules. This occurs due to the presence of the electronegative O atom. 2-methylpropane is a branched version of butane, and hence will have the lowest boiling point, as branching of a molecule decreases the surface contact area for London forces to act. This results in weaker and less London forces between molecules, and hence decreases the substances boiling point.