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Dipole and Polarity

Posted: Fri Jul 08, 2016 10:12 pm
by Alondra Loera 1A
If a molecular structure has dipole charges that do not cancel each other out does that mean that it is polar?

Re: Dipole and Polarity  [ENDORSED]

Posted: Sat Jul 09, 2016 3:33 am
by Shawn Schwartz 1D
Alondra Loera 1A wrote:If a molecular structure has dipole charges that do not cancel each other out does that mean that it is polar?


Yes, if a molecular structure's dipole charges do not cancel out, then it is polar. For example, water is polar which is why it is the amazing solvent that it is on Earth and has so many uses and applications.

Water Structure (with polarity):

WaterDipole.gif
WaterDipole.gif (51.27 KiB) Viewed 577 times


The net dipole vectors created from the partial positives and negatives due to the electronegativity of each atom in the species is what determines where the dipoles are pointed and which direction the magnitudes of each of the charges are the most heavily pointed.

So, when the dipoles do not cancel out and the net dipole moment vector points more in one direction, then that species is indeed polar.

Re: Dipole and Polarity

Posted: Sun Oct 30, 2016 12:09 pm
by Ashley Bertholf 1E
So does this mean that if an element is more electronegative it has a slightly negative charge?

Re: Dipole and Polarity

Posted: Sat Dec 03, 2016 1:49 pm
by Patrick Ricaflanca 2H
If given a list of molecules, how would you determine which has the highest dipole moment? (Assuming they all have dipole moments)