Intermolecular Forces

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AryaG_4C
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Joined: Mon Sep 30, 2019 12:16 am

Intermolecular Forces

Postby AryaG_4C » Tue Nov 19, 2019 4:45 pm

What are all the factors that affect Intermolecular forces? For example, higher boiling point corresponds to greater force.

MingdaH 3B
Posts: 133
Joined: Thu Jul 11, 2019 12:17 am

Re: Intermolecular Forces

Postby MingdaH 3B » Tue Nov 19, 2019 7:06 pm

the shape, molar mass, and individual atomic electronegativity is generally what you'd need to determine IMF. IMF then determines boiling point / melting point, not the other way around.

Paige Lee 1A
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Re: Intermolecular Forces

Postby Paige Lee 1A » Tue Nov 19, 2019 7:07 pm

The size of the molecule affects intermolecular forces. If the molecule is large, it will have more attractive intermolecular forces, which can cause it to change phase and become more condensed (liquid, solid).

Anisha Chandra 1K
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Re: Intermolecular Forces

Postby Anisha Chandra 1K » Wed Nov 20, 2019 10:56 am

Also the interactions between the atoms in the molecule. Pay attention to electronegativity to determine strength of dipole-dipole forces and whether hydrogen is in the molecule to determine if there are hydrogen bonds.

KBELTRAMI_1E
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Re: Intermolecular Forces

Postby KBELTRAMI_1E » Wed Nov 20, 2019 12:22 pm

MingdaH 3B wrote:the shape, molar mass, and individual atomic electronegativity is generally what you'd need to determine IMF. IMF then determines boiling point / melting point, not the other way around.


where can we find this info?

AryaG_4C
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Joined: Mon Sep 30, 2019 12:16 am

Re: Intermolecular Forces

Postby AryaG_4C » Sun Nov 24, 2019 7:59 pm

We were given this information during lecture and its also in chapter 3F in the Chemistry book assigned.

MingdaH 3B
Posts: 133
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Re: Intermolecular Forces

Postby MingdaH 3B » Fri Nov 29, 2019 2:27 pm

KBELTRAMI_4I wrote:
MingdaH 3B wrote:the shape, molar mass, and individual atomic electronegativity is generally what you'd need to determine IMF. IMF then determines boiling point / melting point, not the other way around.


where can we find this info?


I'm assuming Lavelle has touched upon this in lecture, but I can't be sure since I haven't gone. If he had a lecture just about periodic trends or covering IMF's, it would probably be there. The textbook should also cover this to some extent.


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