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### Dipole Moments

Posted: Sat Nov 10, 2018 10:05 pm
Does anyone know if we would ever have to calculate anything like a dipole moment? It might have been said in class but I just can't remember at all.

Thanks so much!

### Re: Dipole Moments

Posted: Sat Nov 10, 2018 10:12 pm
I'm pretty sure don't have to calculate them!

### Re: Dipole Moments  [ENDORSED]

Posted: Sun Nov 11, 2018 11:20 am
He said that we definitely won't have to, but knowing the equation for the sake of conceptual questions is probably a good idea.

### Re: Dipole Moments

Posted: Sun Nov 11, 2018 8:34 pm
We don't have to calculate them.

### Re: Dipole Moments

Posted: Sun Nov 11, 2018 11:56 pm
Which was the equation given for dipole moments?

### Re: Dipole Moments

Posted: Mon Nov 12, 2018 12:31 am
What exactly is a dipole moment? I know it was to do with charges, but is there a deeper explanation?

### Re: Dipole Moments

Posted: Mon Nov 12, 2018 1:42 pm
A dipole moment occurs when one atom in a molecule (or one side of a molecule) is more electronegative than the other, meaning that it attracts electrons. This attraction causes a net negative charge on one end of the molecule and consequently a positive charge on the other end. This polarity within the molecule affects how it bonds with other molecules.

### Re: Dipole Moments

Posted: Mon Nov 12, 2018 5:21 pm
The equation given for dipole moments was:
dipole moment= charge x distance between atoms (bond length)

### Re: Dipole Moments

Posted: Wed Nov 14, 2018 10:07 am
Can someone please explain the difference between an induced dipole, dipole moment, and dipole-dipole interaction? When would you observe one versus the others?

### Re: Dipole Moments

Posted: Wed Nov 14, 2018 11:47 am
An induced dipole is when a molecule that is usually non polar has become temporarily induced to have a dipole by surrounding molecules. I believe a dipole moment is just when a molecule itself has a dipole due the electronegativity of its constituent atoms. A dipole-dipole interaction is when any polar molecule has an interaction with another polar molecule.

### Re: Dipole Moments

Posted: Wed Nov 14, 2018 11:54 am
A dipole-dipole interaction occurs when two polar molecules interact. The partially positive side of one molecule is attracted to the negative side of the other molecule. This is different from a dipole-induced dipole interaction because in a dipole-induced dipole interaction, a polar molecule induces a dipole of an otherwise nonpolar molecule. This happens because the polar molecule distorts the electrons on the nonpolar molecule, resulting in a weak attraction between the two molecules. A dipole moment measures the separation between opposite charges. Hope this helps!