Question

4) If two identical particles are
grouped into three cells having
energies 1.2% 3 ev respectively
then find the total thermodynamic
probability for B-E & F. Statistics​

Answer 1

Answer:

Statistical theory of thermodynamics

In this chapter, we will focus on two topics: (a) foundation of statistical mechanics

and (b) application to isolated systems.

So far, we have only calculated the entropy changes but never the absolute value.

The classical theory of thermodynamics leaves important questions unanswered, e.g.,

• What really is entropy?

• Why does entropy increase?

• Can we deduce equation of state of real thermodynamic systems from first

principles?

The statistical theory addresses these. In particular, we all say that entropy is a

measure of disorder but how do we measure disorder? In addressing this question, we

need to know the state of each particle’s motion in the system, i.e., microstates of a

thermodynamic system. Hence we may say

Entropy → Disorder → Microstates

and we will provide a precise relation between these. We will be able to answer why

always ∆S ≥ 0 in a probabilistical way, namely, the opposite direction of the changes

are very unlikely.