HW Question 3F19

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A Raab 1K
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Joined: Sat Aug 24, 2019 12:16 am

HW Question 3F19

Postby A Raab 1K » Tue Nov 12, 2019 5:11 pm

Account for the following observations in terms of the type and strength of intermolecular forces.
(b) The vapor pressure of diethyl ether (C2H5OC2H5) is greater than that of water.
(c) The boiling point of pentane, CH3(CH2)3CH3, is 36.1 C, whereas that of 2,2-dimethylpropane (also known as neopentane), C(CH3)4, is 9.5 C.

MMckinney_4H
Posts: 61
Joined: Sat Sep 28, 2019 12:16 am

Re: HW Question 3F19

Postby MMckinney_4H » Tue Nov 12, 2019 5:32 pm

Molecules with more intermolecular forces will have a lower vapor pressure. Water's hydrogen bonds make it have a lower vapor pressure. It's very similar to why water's boiling point would be higher than that of diethyl ether.
Last edited by MMckinney_4H on Tue Nov 12, 2019 6:00 pm, edited 1 time in total.

A Raab 1K
Posts: 56
Joined: Sat Aug 24, 2019 12:16 am

Re: HW Question 3F19

Postby A Raab 1K » Tue Nov 12, 2019 5:33 pm

I'm still not quite sure how vapor pressure relates to the different intermolecular forces there are.


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