Is Hydrogen Bonding a type of Dipole-Dipole Interaction?

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Joussie Camacho 4I
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Joined: Tue Oct 02, 2018 12:16 am

Is Hydrogen Bonding a type of Dipole-Dipole Interaction?

Postby Joussie Camacho 4I » Thu Nov 29, 2018 6:46 pm

So is hydrogen bonding just a specific type of dipole-dipole interaction? If so, if we say two molecules have hydrogen bonding, then is it implied that there are dipole-dipole interactions between them also so that we don't have to state that explicitly?

timschaeffer Dis 1J
Posts: 38
Joined: Fri Sep 28, 2018 12:18 am

Re: Is Hydrogen Bonding a type of Dipole-Dipole Interaction?

Postby timschaeffer Dis 1J » Thu Nov 29, 2018 7:13 pm

yes, hydrogen bonding is just a specific category under the larger umbrella of dipole-dipole interactions. If you say that hydrogen bonding exists between two molecules, then it generally goes without saying that there is an intermolecular dipole-dipole force between the molecules

Brice McKeown 3D
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Joined: Fri Sep 28, 2018 12:25 am

Re: Is Hydrogen Bonding a type of Dipole-Dipole Interaction?

Postby Brice McKeown 3D » Sat Dec 01, 2018 6:49 pm

Yes, so if someone says there is hydrogen bonding present, you can assume that dipole-dipole is also present. The opposite is not true though. If it is said that dipole-dipole interactions are taking place, you cannot say that hydrogen bonding is also present without more information!

Brice McKeown 3D
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Joined: Fri Sep 28, 2018 12:25 am

Re: Is Hydrogen Bonding a type of Dipole-Dipole Interaction?

Postby Brice McKeown 3D » Sat Dec 01, 2018 6:50 pm

But for things like exam 3, I think it would be best to state that both hydrogen bonding and dipole-dipole interactions are present

SophiaKohlhoff4B
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Re: Is Hydrogen Bonding a type of Dipole-Dipole Interaction?

Postby SophiaKohlhoff4B » Sun Dec 02, 2018 2:12 pm

If the final asks for the intermolecular forces in a molecule, can we always write that London forces are present or are there cases where they are not?

Lasya Gudipudi 1A
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Re: Is Hydrogen Bonding a type of Dipole-Dipole Interaction?

Postby Lasya Gudipudi 1A » Sun Dec 02, 2018 2:30 pm

SophiaKohlhoff4B wrote:If the final asks for the intermolecular forces in a molecule, can we always write that London forces are present or are there cases where they are not?


I believe Lavelle said that London Dispersion Forces are always present in between molecules that are close to each regardless of whether they are polar or nonpolar.


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