Free Energy Functions

For an ideal gas undergoing a reversible isothermal expansion: -

%5CDelta%20G

is the change in Gibbs free energy, and

%5CDelta%20A

is the change in Helmholtz free energy. - Since the process is isothermal, the temperature

T

is constant, and hence, the change in entropy,

%5CDelta%20S

, is zero. This means that

%5CDelta%20G%20%3D%20%5CDelta%20A

. - For an ideal gas undergoing an isothermal process,

%5CDelta(PV)%20%3D%200

as pressure and volume follow the ideal gas law. Hence, statements (A) and (B) are correct. Final Answer:

%5Cboxed%7B%5Ctext%7B(1)%20(A)%20and%20(B)%20only%7D%7D

Chapter Questions
1 MCQs