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residual entropy T=0

Posted: Fri Mar 15, 2019 9:04 pm
by Summer de Vera 2C
Hi! for residual entropy, it's defined as being the entropy of a sample at T=0 from the remaining positional disorder @ that temp, but I'm a bit confused as to what T=0 refers to. Because it's not deltaT=0, which means it's isothermal, and the units aren't defined (T=0 K/˚C). So what does this refer to?

Re: residual entropy T=0

Posted: Fri Mar 15, 2019 9:46 pm
by Christopher Anisi 2K
I think the most important aspect of residual entropy is that it does not include the aspect of temperature and is only focused on the number of positions and orientations that the structure can take on.

Re: residual entropy T=0

Posted: Fri Mar 15, 2019 10:12 pm
by Alexa_Henrie_1I
When absolute temperature equals zero (T=0), there is no thermal entropy (no movement). This means that residual entropy is based on the complexity and order of the molecule and its positions.