Dipole Moments

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Melissa Villanueva1K
Posts: 64
Joined: Wed Nov 15, 2017 3:01 am

Dipole Moments

Postby Melissa Villanueva1K » Sun Nov 25, 2018 9:39 pm

How do we identify dipole moments in a compound? (an example would be greatly appreciated) Thanks!
Does it usually have to do the slightly negative and slightly positive components?

armintaheri
Posts: 68
Joined: Fri Sep 28, 2018 12:26 am

Re: Dipole Moments

Postby armintaheri » Sun Nov 25, 2018 10:41 pm

A permanent dipole happens when the molecule contains polar bonds and is asymmetrical. For example, doesn't have a permanent dipole moment because it contains no polar bonds. Carbon tetrachloride doesn't have a permanent dipole moment because it's symmetrical. Chloroform does have a permanent dipole moment because it contains polar carbon-chlorine bonds and it's asymmetrical. But you can also have temporary dipole moments that occur because electrons just happen to be concentrated on one side of a molecule. Temporary dipoles are random and can occur in any compound.

Alicia Gibbons 1B
Posts: 31
Joined: Fri Sep 28, 2018 12:17 am

Re: Dipole Moments

Postby Alicia Gibbons 1B » Mon Nov 26, 2018 1:20 pm

More than one type of bond creates dipole moments. Hydrogen bonding, ionic bonding, and polar covalent bonding would create permanent dipole moments. London dispersion forces would create temporary dipole moments.


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