Molar mass and attractive interactions

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Divya Pimparkar 1E
Posts: 30
Joined: Fri Sep 28, 2018 12:19 am

Molar mass and attractive interactions

Postby Divya Pimparkar 1E » Sun Nov 11, 2018 3:54 pm

How does a bigger molar mass exactly result in more attractive interactions between molecules?

Tessa Lawler 1A
Posts: 57
Joined: Fri Sep 28, 2018 12:18 am

Re: Molar mass and attractive interactions

Postby Tessa Lawler 1A » Sun Nov 11, 2018 3:58 pm

Since an element with a bigger molar mass has more protons to give it that high mass, it also has more electrons. I would assume that that would be one reason.

Estelle Jung
Posts: 31
Joined: Fri Sep 28, 2018 12:29 am

Re: Molar mass and attractive interactions

Postby Estelle Jung » Sun Nov 11, 2018 4:17 pm

If you are referring to the Van Der Waal forces, then molecules with higher molar masses will generally have higher surface areas, thus having higher values of Van Der Waal intermolecular forces.

Moryel Yashar 1J
Posts: 31
Joined: Fri Sep 28, 2018 12:15 am

Re: Molar mass and attractive interactions

Postby Moryel Yashar 1J » Sun Nov 11, 2018 4:20 pm

Heavier (i.e. large molar mass) molecules contain more electrons and thus have a larger and more polarizable electron cloud. This ultimately results in that molecule's greater possibility of intermolecular interaction by dispersion forces.


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