## DeltaS=kBlnW

Volume: $\Delta S = nR\ln \frac{V_{2}}{V_{1}}$
Temperature: $\Delta S = nC\ln \frac{T_{2}}{T_{1}}$

Linh Vo 2J
Posts: 61
Joined: Sat Apr 28, 2018 3:00 am

### DeltaS=kBlnW

How is the equation DeltaS=kBlnW used and what do the individual variables represent?

Ana Pedreros
Posts: 62
Joined: Fri Sep 28, 2018 12:19 am

### Re: DeltaS=kBlnW

This equation is used when you are looking for the change in entropy of a molecule based on its degeneracy (W or the number of ways the atom can be arranged) at any temp. Kb is the boltzmann constant = 1.381 x 10^-23 J/K.

Olivia Young 1A
Posts: 60
Joined: Fri Sep 28, 2018 12:24 am

### Re: DeltaS=kBlnW

This equation, called the Boltzmann formula, is used to calculate deltaS (statistical entropy). kB is Boltzmann's constant, 1.381 x 10^-23 J/K, which is multiplied by the natural logarithm of W, degeneracy. Degeneracy is the number of ways that atoms/molecules can be arranged with the same total energy.

Katelyn Phan 2A
Posts: 61
Joined: Fri Sep 28, 2018 12:23 am

### Re: DeltaS=kBlnW

This equation is used to calculate residual entropy on a microscopic level. It refers to W, (the number of micro-states it may take)^ # of particles. Kb is Boltzmann's constant given on the formula sheet.