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Entropy
Posted: Thu Feb 08, 2018 11:38 pm
by Rebecca Doan 2L
What is the difference between S°m, S°r, and S°f?
Re: Entropy
Posted: Fri Feb 09, 2018 12:08 am
by Anna Okabe
I'm not exactly sure because you didn't give context, but S^0 m is most likely entropy for the melting point, r is for reactants and f is for final.
Re: Entropy
Posted: Fri Feb 09, 2018 1:39 am
by Justin Chang 2K
S^o (m) is the standard molar entropy (the values in the back of the textbook). I think S^o (f) is similar to the S^o (m). I don't quite know what S^o (r) is though.
Re: Entropy
Posted: Fri Feb 09, 2018 10:12 am
by Sarkis Sislyan 1D
S^o r is the standard reaction entropy
Re: Entropy
Posted: Fri Feb 09, 2018 5:46 pm
by Jessica Benitez 1K
This is what I think:
S°m would be the Standard Molar Entropy
S°r would be the Standard Reaction Entropy
S°f would be the Standard Entropy of Formation
Re: Entropy
Posted: Fri Feb 09, 2018 8:37 pm
by Dylan Mai 1D
is there an entropy of fusion?
Re: Entropy
Posted: Sat Feb 10, 2018 8:18 am
by Tim Nguyen 2J
Dylan Mai 1D wrote:is there an entropy of fusion?
I don't think it is a tabulated value in any of the tables or appendixes in the textbook, but you can definitely calculate it similarly to calculating the entropy of vaporization.
entropy of fusion = enthalpy of fusion/melting point (Tb)
Re: Entropy
Posted: Sat Feb 10, 2018 9:55 am
by Cristina Sarmiento 1E
S°m is molar entropy.
S°f is standard entropy of formation.
S°r is standard reaction entropy.