Hydrogen Bonding vs Ion-Dipole Interactions

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Andre Ambarchyan 2B
Posts: 47
Joined: Fri Sep 27, 2024 7:45 am

Hydrogen Bonding vs Ion-Dipole Interactions

Postby Andre Ambarchyan 2B » Tue Nov 12, 2024 12:16 pm

Are hydrogen bonds or ion-dipole interactions stronger? My TA said that ion-dipole interactions are stronger but when I look in the textbook, it says that the typical energy of ion-dipole interactions are 15 kJ/mol, while the typical energy of hydrogen bonds are 20 kJ/mol. In other words, the textbook conveys that hydrogen bonds are actually stronger. So, which is actually true?

alishadhanantwari_2F
Posts: 41
Joined: Fri Sep 27, 2024 8:08 am

Re: Hydrogen Bonding vs Ion-Dipole Interactions

Postby alishadhanantwari_2F » Tue Nov 12, 2024 12:42 pm

Hello. ​Ion-dipole interactions are generally stronger than hydrogen bonds.​ The strength of ion-dipole interactions is influenced by the charge of the ion and the distance between the ion and the dipole. Ion-dipole forces are stronger in solutions where ionic compounds dissolve in polar solvents, as the positive end of the polar molecule is attracted to the cation, while the negative end is attracted to the anion. The typical strength of hydrogen bonds typically ranges from about 4 kJ/mol to 50 kJ/mol and will decrease in strength inversely related to the distance between molecules.


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