Explain why propanol has a higher boiling point than that of the hydrocarbon, butane.
Propanol undergoes intermolecular H-bonding because of the presence of the -OH group. On the other hand, butane does not
Therefore, extra energy is required to break hydrogen bonds. For this reason, propanol has a higher boiling point than hydrocarbon butane.
Arrange the following compounds in increasing order of their boiling points:

The reaction 
suggests that phenol is :
In the reaction R–OH + HCl $\xrightarrow{\text{ZnCl}_2}$ RCl + H$_2$O, what is the correct order of reactivity of alcohols?

