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Chemistry · L5 · Entropy from Microstates: Gas vs Solid

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Why S = k ln W makes gases far more entropic than solids: a gas has vastly more accessible position and momentum microstates than particles pinned near lattice sites.

by @openstemUpdated Chemistry
Macrostate: fixed N, V, UCount accessiblemicrostates WSolid: particles pinned nearlattice sites - few microstatesGas: particles roam the fullcontainer volume - many microstatesS(solid) = k ln W(solid) - smallS(gas) = k ln W(gas) - largeS(gas) much greaterthan S(solid)

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