Residual Entropy

[IA_1D]

Hi what is residual entropy and how does it play a part in calculations?

[WendyN_L2]

Residual entropy is when you make the system go to 0 Kelvin and there is still positional disorder, meaning get molecules can still move. For example even when NO is at zero kelvin the molecules N and O positions still can switch in comparison to Cl2 both sides are Cl. Hope this helps

[Jeffrey Yang 3I]

Residual entropy conceptually is explained by the difference in actual and ideal entropy. Ideally, molecules don't move at 0 kelvin, but this is not the case.

[Mara Crooks 1F]

Residual entropy is the difference between a non-equilibrium entropy and the state closest to zero, or ideal entropy. Simply, I think about it as entropy at 0 (zero) Kelvin because some substances can still have a positive entropy at 0 K.

[Debie_Morales1D]

Residual entropy can be calculated as the difference between the experimental value of entropy and theoretical value.It is used to describe the entropy at zero kelvin of a glass or plastic crystal referred to the crystal state

[Sujin Lim 1H]

Residual entropy is the entropy that remains when a molecule/substance is under 0K conditions due to positional disorder. There are many molecules that can exist in more than one orientation, so even if there is no thermal disorder (movement) at a low temperature of 0K, there is disorder due to the way they are packed into a solid. Usually molecules that are non-symmetrical can exist in more than one different orientation with the same energy level, thus leading to disorder when they are packed together. Residual entropy affects calculations for Entropy values when you use the Boltzmann's equation, because if a molecule can exist in for example three different orientations, the entropy S value will be larger than for a molecule that can only exist in one orientation. Hope this helps!

[Hailey Sarmiento 3E]

residual entropy is the entropy or randomness in the system that arises from positional disorder. This is greater when you have more possible orientations with more molecules. degeneracy (W) can also be used to find S with the Boltzmann equation (S = kBlnW)

[amara ajon 1d]

Hi,
Residual Entropy is the entropy that remains in a substance at 0K, of the different orientation possibilities of atoms in a molecule.

[Cindy Vo 3E]

Residual entropy is when there is still positional disorder at 0 K. It is the difference between actual entropy and ideal entropy where ideally there is no movement at 0 K.

[Skylar Lo 2C]

Residual entropy is the remaining entropy in a system once 0K has been achieved.

[AnoushkaBhat2J]

Hi what is residual entropy and how does it play a part in calculations?

Hello! I like to think about residual entropy as what would happen to molecules if they were at absolute 0! In this case, molecules which have molecules that differ and have different orientations (can be arranged differently) will have a tiny bit of entropy even at absolute 0, whereas others which have linear orientations will not.

[Kelly McFarlane]

Residual entropy is the positional disorder at temperature 0 K when more than one orientation of a molecule is possible.

[Tara Cumiskey 3K]

Residual entropy is the entropy that remains in the system at 0 K.

[405672459]

residual entropy is possessed by a substance even at absolute 0 K, Therefore it stays in the system.