Polarity

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

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505095793
Posts: 61
Joined: Fri Sep 28, 2018 12:25 am

Polarity

Postby 505095793 » Sat Nov 17, 2018 7:31 pm

What are the characteristics that make a compound polar or non-polar?

Patrick Cai 1L
Posts: 93
Joined: Fri Sep 28, 2018 12:25 am

Re: Polarity

Postby Patrick Cai 1L » Sat Nov 17, 2018 7:40 pm

Polar compounds typically have significant dipole moments and dissolve in the most ubiquitous polar solvent, water. They tend to also have higher melting and boiling points than nonpolar compounds with molecular weights similar to them. Nonpolar compounds lack dipole moments and thus don't dissolve in water. They have lower melting and boiling points than polar compounds with molecular weights similar to them.

Catly Do 2E
Posts: 64
Joined: Fri Sep 28, 2018 12:24 am

Re: Polarity

Postby Catly Do 2E » Sat Nov 17, 2018 9:26 pm

Polar compounds are often nonsymmetrical as well. The lack of symmetry is what causes dipole moments. Nonpolar molecules do not have dipole moments because either the bonded atoms do not have a great enough electronegativity difference or the molecule is symmetrical and the dipole moments cancel.

Grace Diaz 3F
Posts: 30
Joined: Fri Sep 28, 2018 12:24 am

Re: Polarity

Postby Grace Diaz 3F » Sun Nov 18, 2018 1:01 pm

A compound that is polar has a greater electronegativity difference (considered ionic) versus one that is nonpolar. These types of compounds form dipoles.


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