Question

explain the physical significane of entropy

Answer 1

Physical significance of Entropy. The entropy of a substance is real physical quantity and is a definite function of the state of the body like pressure, temperature, volume of internal energy. ... Entropy is a measure of the disorder or randomness in the system.

Answer 2

Explanation:

(1) It is an extensive properly and a state function

(2) It’s value depends upon mass of substance present in the system

(3) \Delta S = S_{final}- S_{initial}

(4) At equilibrium \Delta S = zero

(5) For a cyclic process \Delta S = 0

(6) For natural process \Delta S > 0 i.e Increasing.

(7) For a adiabatic process \Delta S zero