Polar vs. Non-polar

(Polar molecules, Non-polar molecules, etc.)

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Nadeen 3D
Posts: 21
Joined: Thu Sep 27, 2018 11:26 pm

Polar vs. Non-polar

Postby Nadeen 3D » Tue Nov 27, 2018 7:17 pm

Are we able to distinguish a molecule polar or non-polar if there is an ion? Because when I was doing practice problems, when distinguishing polarity a lot of the answers said n/a. So does that mean we do not know whether the molecule is polar vs. nonpolar?

Ricky Ma DIS 4E
Posts: 58
Joined: Thu Sep 27, 2018 11:27 pm

Re: Polar vs. Non-polar

Postby Ricky Ma DIS 4E » Tue Nov 27, 2018 7:53 pm

Just think about the net dipoles and whether they cancel. You have to take in account the shape of the molecule.

Erin Nash - 4G
Posts: 29
Joined: Thu Sep 27, 2018 11:27 pm

Re: Polar vs. Non-polar

Postby Erin Nash - 4G » Tue Nov 27, 2018 10:29 pm

When deciding whether a molecule is polar or nonpolar you must look at the shape to see the dipoles. If there are no dipoles, then it is nonpolar or if the dipoles cancel out then it is nonpolar. If the dipoles are uneven (large difference in electronegativity) then the molecule is polar.

Aiden Atoori 1C
Posts: 48
Joined: Thu Sep 27, 2018 11:24 pm

Re: Polar vs. Non-polar

Postby Aiden Atoori 1C » Tue Nov 27, 2018 11:01 pm

A good trick to distinguish polar and no polar is by drawing a Lewis structure and using the following rules.
1.It is non polar if there are no lone pairs and if all the attached structures are the same.

Destiny Diaz 4D
Posts: 22
Joined: Thu Sep 27, 2018 11:28 pm

Re: Polar vs. Non-polar

Postby Destiny Diaz 4D » Tue Nov 27, 2018 11:05 pm

How would you find the dipoles in this case ?

Nicolle Fernandez 1E
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Joined: Thu Sep 27, 2018 11:25 pm
Been upvoted: 1 time

Re: Polar vs. Non-polar

Postby Nicolle Fernandez 1E » Tue Nov 27, 2018 11:16 pm

If you were to draw the Lewis structure then you would be able to tell which molecules are polar or not

Arlene Linares 3A
Posts: 50
Joined: Thu Sep 27, 2018 11:25 pm

Re: Polar vs. Non-polar

Postby Arlene Linares 3A » Tue Nov 27, 2018 11:53 pm

Ricky Ma DIS 4I wrote:Just think about the net dipoles and whether they cancel. You have to take in account the shape of the molecule.



Thank you for the information.


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