Explain why propanol has higher boiling point than that of the hydrocarbon, butane?

Propanol has a higher boiling point than butane due to the presence of intermolecular forces known as hydrogen bonds, which are stronger than the van der Waals forces present in butane.

Here are the steps to understand this:

1. Both propanol and butane are organic compounds, but they differ in their structure and the types of bonds they form.

2. Propanol (C3H7OH) is an alcohol, which means it has a hydroxyl (-OH) group. This group is capable of forming hydrogen bonds, which are relatively strong intermolecular forces.

3. Butane (C4H10), on the other hand, is an alkane and does not have a hydroxyl group. It can only form van der Waals forces (also known as London dispersion forces), which are the weakest type of intermolecular force.

4. The strength of intermolecular forces affects the boiling point of a substance. The stronger the intermolecular forces, the more energy is required to break them and convert the substance from a liquid to a gas. Therefore, substances with stronger intermolecular forces have higher boiling points.

5. Since hydrogen bonds are stronger than van der Waals forces, propanol has stronger intermolecular forces and thus a higher boiling point than butane.