Module 5 : Statistical Thermodynamics

Lecture 8 : Application of Partition Function and Relation Between Entropy and Probability

Now,

 

(5.241)

Since

 

 

 

 

(5.242)

Thus

(5.243)

which is valid for a reversible process.

Properties of Ideal Gases

As shown in Fig. 19.11

(5.244)

Now,

or

(5.245)

which is the equation of state of an ideal gas.
For an ideal gas,

 

 

(5.246)


(5.247)


(5.248)

 

(5.249)