Which of the following has the highest boiling point?Group of answer choices2-PentynePentanolPentane2-Pentene

The boiling point of a substance is determined by the strength of the forces between its molecules. The stronger the forces, the more energy is required to break them and the higher the boiling point.

1. 2-Pentyne is an alkyne with a triple bond. It has weak van der Waals forces.

2. Pentane is an alkane with only single bonds. It also has weak van der Waals forces.

3. 2-Pentene is an alkene with a double bond. It has slightly stronger van der Waals forces due to the double bond.

4. Pentanol is an alcohol, which means it has a hydroxyl (-OH) group. This group can form hydrogen bonds, which are much stronger than van der Waals forces.

Therefore, pentanol has the highest boiling point among the given options.