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Statistical Thermodynamics - Coggle Diagram
Statistical Thermodynamics
Introduction to terms
Entropy : Atomic Scale Disorder
Entropy solid less than liquid less than gas
Latent heat : Hidden Heat (Latent Heat applies when melting / vaporizing)
Entropy of the universe equal to zero in this case
Entropy change when melting an ice cube : delta Hm/Tm
For the process to occur spontaneously, the entropy of universe should increase . Delta S universe = Delta S system + Delta S surrounding
Gibbs : Degree of mixed upness at atomic/molecular scale
Concept of microscopic
Energy level depends on volume
If Volume is fixed, energy level is fixed
Example : Energy level should be fixed, but the number of atoms may vary. The most random arrangement is the most likely to occur, since it's the most probable
Using combination formula
WHen Entropy is maximum
tHe number of arrangement is also in its maximum value
Determination of the most probable state
Fixed Volume - Fixed Energy Level
Fixed internal energy, U = niEi + n1+E1 = sigma ni Ei
At equilibrium, the atoms should be in the most random arrangement
Using the combination formula, and Langrange Multiplier method, we get Ni, from ln (x) formula we get a formula involving partition and internal energy. The value of beta is. 1 over ( boltzman constant*temperature) from boltzman equation of entropy
Influence of Temperature
Heat Flow and Production of Entropy