HCL vs NaCl

[Ayush Ray 1I]

Can somebody please explain why NaCl has a higher melting point than HCl

[haileyramsey-1c]

NaCl has a very large difference in electronegativity compared to HCl resulting is stronger dipole dipole forces. Also, NaCl is larger and has more electrons than hydrogen therefore has stronger London dispersion forces. Since, both of these intermolecular forces are stronger than those in HCl, the melting point for NaCl is higher because it would requires more energy to break the forces.

[Vanessa Chuang 4F]

NaCl has a higher melting point than HCl because it is ionic vs HCl which is not. Ion-ion bonds are always more strongly held together than non ion-ion bonds which means you need more energy to break apart NaCl. This results in a higher melting point.

[Jorge Ramirez_4H]

What is melting point based on?

[Tyler Angtuaco 1G]

Ion-ion interactions are stronger than the dipole-dipole interactions of HCl, so it takes more energy (heat) to overcome ion-ion forces.

[Matt Sanruk 2H]

So all ionic compounds will have higher imf, boiling and freezing points than any covalent molecule, right?

[Michelle Le 1J]

So all ionic compounds will have higher imf, boiling and freezing points than any covalent molecule, right?

Yes, ionic compounds have the strongest intermolecular forces compared to the covalent molecules, as well as they generally have higher boiling and melting points.