Fundamental thermodynamic property relations for a fluid of constant
composition are as follows:
→ I
→ II
→ III
→ IV
Criterion of exactness for a differential expression:
If
, then the total differnential of F
is
defined as
Otherwise,
where,
and
By further differentiation, we obtain
Since the order of differentiation in mixed second derivatives is
immaterial, these equations give
Equation VI serves as a criterion of exactness, when F is a
function of x & y → VI
Last Modified on: 01-May-2024
Chemical Engineering Learning Resources - msubbu
e-mail: learn[AT]msubbu.academy
www.msubbu.in