hw9.59 standard reaction entropy

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Yutian Zhao -1J
Posts: 30
Joined: Fri Sep 29, 2017 7:05 am

hw9.59 standard reaction entropy

Postby Yutian Zhao -1J » Tue Feb 06, 2018 10:55 am

when we are asked to calculate the standard reaction S/H/G, does the stoichiometric coefficient of one product must be 1? Or we can calculate these standard reaction entropy/enthalpy/ free energy just by balancing the reaction regardless of the product's stoichiometric coefficient ? Since in 9.59, the stoichiometric coefficients for products are not 1 but in 9.57 they are 1. Can somebody help me with this? Thanks!

Brigitte Phung 1F
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Re: hw9.59 standard reaction entropy

Postby Brigitte Phung 1F » Tue Feb 06, 2018 1:38 pm

I believe that you should work with the balanced equations! For both 9.57 and 9.59, the equations they gave are already balanced so you can go ahead and work with those. For these problems just remember that the ΔHf and ΔGf of O2 are 0. Hope this helps!

Maeve Gallagher 1J
Posts: 56
Joined: Fri Sep 29, 2017 7:07 am

Re: hw9.59 standard reaction entropy

Postby Maeve Gallagher 1J » Tue Feb 06, 2018 4:07 pm

Yes, you should use the stoichiometric coefficients given in the balanced equations for reactions when finding delta S,G, and H.

Yutian Zhao -1J
Posts: 30
Joined: Fri Sep 29, 2017 7:05 am

Re: hw9.59 standard reaction entropy

Postby Yutian Zhao -1J » Tue Feb 06, 2018 5:12 pm

thanks!!


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