Statistical and residual entropy

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Kate_Santoso_4F
Posts: 72
Joined: Fri Sep 28, 2018 12:29 am

Statistical and residual entropy

Postby Kate_Santoso_4F » Tue Feb 12, 2019 10:41 pm

Can someone please explain what the difference is between statistical and residual entropy and if it is just dependent on the number of microstates?

Chem_Mod
Posts: 17949
Joined: Thu Aug 04, 2011 1:53 pm
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Re: Statistical and residual entropy

Postby Chem_Mod » Wed Feb 13, 2019 10:18 am

They are basically the same! They are due to structural or positional disorder only. yes it has to do with the microstates a molecule can have.

Dimitri Speron 1C
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Joined: Fri Sep 28, 2018 12:17 am
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Re: Statistical and residual entropy

Postby Dimitri Speron 1C » Thu Feb 14, 2019 10:04 am

Statistical entropy is the total amount of entropy for the given amount of micro states, whereas residual entropy is a specific entropy that is left after most of the thermal energy of the system is gone. (i.e. the temp approaches 0K)

Sarah Kiamanesh 1D
Posts: 30
Joined: Fri Sep 28, 2018 12:22 am

Re: Statistical and residual entropy

Postby Sarah Kiamanesh 1D » Thu Feb 14, 2019 10:13 am

Statistical entropy is what is deduced after using Boltzmann's Formula: S = klnW
Residual entropy, however, is the entropy of a system after it has been cooled to 0K. In a perfect crystal structure, there would be no residual entropy, but distortions in structure contributes to this.


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