Question

What is Maxwell Relation?Why it is needed?

Answer 1

Hello mate,

Here is your answer,

Maxwell's relations are a set of equations in thermodynamics which are derivable from the symmetry of second derivatives and from the definitions of the thermodynamic potentials.

The Maxwell relations allow you to relate changes in one set of thermodynamic variable to other variables.

For example, suppose you want to determine the entropy change of a system with respect to pressure at constant enthalpy.