Residual Entropy

Boltzmann Equation for Entropy:

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Gurvardaan Bal1L
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Residual Entropy

Postby Gurvardaan Bal1L » Sat Feb 10, 2018 3:11 pm

What exactly is residual entropy and how is it related to the Boltzmann equation?

Sabrina Dunbar 1I
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Re: Residual Entropy

Postby Sabrina Dunbar 1I » Sat Feb 10, 2018 4:30 pm

Residual/positional entropy is the entropy calculated at a constant temperature, independent of the enthalpy value of the system. The other entropy, thermal entropy, incorporates the ∆H value because there is a change in temperature of the system. Boltzmann's equation does not account for temperature, so that is why it is the best to calculate S when T is a constant value with no bearing on the entropy when calculated using only the kB constant and the degeneracy.

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