Dipole Moment

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philipraj_1F
Posts: 52
Joined: Fri Aug 30, 2019 12:16 am

Dipole Moment

Postby philipraj_1F » Tue Nov 19, 2019 8:28 pm

What difference in electronegativity values is needed for a dipole moment and how do you calculate this difference if we are not given an electronegativity chart?

Sophia Shaka 3L
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Re: Dipole Moment

Postby Sophia Shaka 3L » Tue Nov 19, 2019 8:41 pm

You know electronegativity trends from the periodic table, so unless you want the exact numerical value, you can just follow the trend. The larger the difference in electronegativity, the larger the dipole moment. Polar molecules have permanent dipole moments, and nonpolar molecules can have induced dipole moments.

Jielena_Bragasin2G
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Re: Dipole Moment

Postby Jielena_Bragasin2G » Sat Nov 23, 2019 11:07 pm

You can find the polarity of a molecule using the lewis structures and VSEPR models.

Natalie Benitez 1E
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Joined: Fri Aug 02, 2019 12:15 am

Re: Dipole Moment

Postby Natalie Benitez 1E » Mon Nov 25, 2019 5:05 pm

How do we tell there is a major difference in electronegativity to cause dipole-moments? Is there a specific range or even an electronegativity chart being given?

Katherine Brenner 3H
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Joined: Wed Sep 18, 2019 12:18 am

Re: Dipole Moment

Postby Katherine Brenner 3H » Mon Nov 25, 2019 7:51 pm

Can an individual molecule be dipole- dipole. Or would we just say that this is a dipole moment within 1 molecule?

Sion Hwang 4D
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Joined: Wed Sep 18, 2019 12:21 am

Re: Dipole Moment

Postby Sion Hwang 4D » Mon Nov 25, 2019 9:32 pm

Katherine Brenner 3H wrote:Can an individual molecule be dipole- dipole. Or would we just say that this is a dipole moment within 1 molecule?


An individual molecule will only have a dipole moment. Dipole-dipole interaction can only occur between two molecules. This is because dipole-dipole is an intermolecular force, not an intermolecular force.

Daniel Yu 1E
Posts: 100
Joined: Sat Aug 24, 2019 12:15 am

Re: Dipole Moment

Postby Daniel Yu 1E » Mon Nov 25, 2019 11:39 pm

Dipole-Dipole is a describing two molecules, each with an individual dipole, interacting. Thus it is an intermolecular force. A dipole itself is a separation of charge in a molecule, resulting from an uneven distribution of electrons.

AprilPaz
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Re: Dipole Moment

Postby AprilPaz » Tue Nov 26, 2019 4:15 am

The difference in electronegativities dictates the size of the dipole moment.

Merin Padayatty 3G
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Joined: Thu Jul 11, 2019 12:16 am

Re: Dipole Moment

Postby Merin Padayatty 3G » Tue Nov 26, 2019 11:33 am

The periodic table provides a general trend of electronegativity, and you can determine whether a molecule has a dipole moment and is polar from the shape using the VSEPR model.

Katherine Brenner 3H
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Joined: Wed Sep 18, 2019 12:18 am

Re: Dipole Moment

Postby Katherine Brenner 3H » Fri Dec 06, 2019 7:11 pm

Does Dipole Moments indicate polarity also?

Emily_4B
Posts: 57
Joined: Wed Sep 18, 2019 12:21 am

Re: Dipole Moment

Postby Emily_4B » Fri Dec 06, 2019 7:20 pm

Katherine Brenner 3H wrote:Does Dipole Moments indicate polarity also?

Yes if dipole moments do not cancel out then the molecule is polar


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