### Boltzmann Equation

Posted:

**Sun Feb 23, 2020 10:27 pm**I'm a little confused as to what exactly the Boltzmann equation is trying to explain in terms of entropy. When is it usually applied?

Created by Dr. Laurence Lavelle

https://lavelle.chem.ucla.edu/forum/

https://lavelle.chem.ucla.edu/forum/viewtopic.php?f=132&t=60155

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Posted: **Sun Feb 23, 2020 10:27 pm**

I'm a little confused as to what exactly the Boltzmann equation is trying to explain in terms of entropy. When is it usually applied?

Posted: **Sun Feb 23, 2020 10:42 pm**

Boltzmann's equation is an equation relating the entropy S of an ideal gas to the quantity W, the number of real microstates corresponding to the gas' macrostate: S = k_{B} ln W

where kB is the Boltzmann constant (also written as simply k) and equal to 1.38 × 10^{−23} J/K.

where kB is the Boltzmann constant (also written as simply k) and equal to 1.38 × 10

Posted: **Sun Feb 23, 2020 10:42 pm**

The Boltzmann equation relates microstates of a system to a macroscopic quantity called entropy. It measures the possible microstates to give a quantity of the entropy of a system.