What will happen when ethanol is heated with zinc chloride?

Explanation

In case of haloarene, halogen atom present at benzene ring is slightly deactivating. It increases electron density at o-and p- position in benzene ring and making o-and p- position activating o- and p- directing. That.s why substitution takes place at o- and p- positions. It is clear fro resonating structure of haloarene.