8.29

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Jimmy Zhang Dis 1K
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Joined: Fri Sep 29, 2017 7:05 am

8.29

Postby Jimmy Zhang Dis 1K » Fri Jan 19, 2018 9:17 am

In the solution manual it says that NO2 has a higher heat capacity because of "more possible bond vibrations." Is it safe to assume that a molecule with more bonds will have a higher heat capacity?

Chris Lamb 1G
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Joined: Fri Jun 23, 2017 11:39 am

Re: 8.29

Postby Chris Lamb 1G » Fri Jan 19, 2018 9:26 am

Yes, heat capacity increases with molecular complexity.

siannehazel1B
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Joined: Fri Sep 29, 2017 7:06 am

Re: 8.29

Postby siannehazel1B » Fri Jan 19, 2018 10:01 am

Yes, the larger the molecule, the more bonds there are that have to be accounted for when it is being heated.

Aditya Pimplaskar 1J
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Joined: Thu Jul 13, 2017 3:00 am

Re: 8.29

Postby Aditya Pimplaskar 1J » Fri Jan 19, 2018 10:23 am

I agree with the previous replies: more bonds (greater molecular complexity) contributes to a higher heat capacity. To add to previous responses, this property stems from the fact larger, more complex molecules can move (vibrate, rotate, etc.) in more ways. More options for motion leads to more energy needed to break the bonds holding these molecules together.

LMendoza 2I
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Joined: Sat Jul 22, 2017 3:00 am

Re: 8.29

Postby LMendoza 2I » Fri Jan 19, 2018 11:15 am

The more bonds there is, the harder it is to break them. Therefore, more heat would be required and the heat capacity would be higher.


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