9.25


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Felicia Fong 2G
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Joined: Sat Jul 22, 2017 3:00 am

9.25

Postby Felicia Fong 2G » Sun Feb 04, 2018 12:27 pm

Q:What is the residual molar entropy of SO2F2?
I drew out the 6 different lewis structures for the SO2F2. The formula used is S=klnW. In the solutions manual, it says S=kln6^6.02x10^-23. Why is 6 raised to avogadro's number?

Joyce Lee 1C
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Re: 9.25

Postby Joyce Lee 1C » Sun Feb 04, 2018 12:50 pm

There are 6 different orientations for SO2F2, so W = 6^N, where N is Avogadro's number. 6 is raised to Avogadro's number to account for 1 mole of the substance, rather than just 1 molecule.

Ivy Lu 1C
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Joined: Thu Jul 27, 2017 3:00 am

Re: 9.25

Postby Ivy Lu 1C » Sun Feb 04, 2018 3:00 pm

The 6 is raised to avogadro's number because the question is asking for the molar entropy, so that's the entropy per mole of SO2F2.

Katelyn 2E
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Re: 9.25

Postby Katelyn 2E » Mon Feb 05, 2018 6:55 pm

to follow up, how do you know that W is 6?

Janine Chan 2K
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Re: 9.25

Postby Janine Chan 2K » Tue Feb 06, 2018 12:01 am

There are 6 different states the molecule can exist in (you can switch the Os and the Fs around the S atom 6 different ways).

Jessica Nunez 1I
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Joined: Thu Jul 13, 2017 3:00 am

Re: 9.25

Postby Jessica Nunez 1I » Tue Feb 06, 2018 9:38 am

In order to find W, I think it would help drawing out different Lewis structures to identify the various ways the molecule can exist.


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