O-Hydroxyacetophenone has a melting point of 4-6 degrees celsius while p-Hydroxyacetophenone has a melting point of 109-111 degrees Celsius please explain the sizable difference in the melting points?

Answer 1

P-Hydroxyacetophenone is very polar compared to o-Hydroxyacetophenone. Because polar compounds have stronger dipole-dipole interactions, they require a higher output of kinetic energy (temperature) in order to break (melt).

Answer 2

O-Hydroxyacetophenone_has_a_melting_point_of_4-6_degrees_celsius_while_p-Hydroxyacetophenone_has_a_melting_point_of_109-111_degrees_Celsius_please_explain_the_sizable_difference_in_the_melting_points

Answer 3

The difference in melting points can be attributed to the position of the hydroxyl group on the aromatic ring. Para-hydroxyacetophenone has stronger intermolecular forces due to hydrogen bonding between the hydroxyl groups, leading to a higher melting point. In contrast, ortho-hydroxyacetophenone experiences less efficient hydrogen bonding, resulting in a lower melting point.

Answer 4

Weaker hydrogen bonding means less energy needs to be present to liberate it form the solid state. Also, don't ask Ochem questions here, people give you stupid answers.