The change in GIBBS free energy=
(total energy change)-(volume change energy) -(entropy change)(temperature)=change in "useful" energy.
This is not hw but I need to know what the volume change energy is? thanks
V dp
http://en.wikipedia.org/wiki/Gibbs_free_energy
The volume change energy, also known as the P-V work energy, represents the energy associated with the change in volume of a system at constant pressure. It is a contribution to the overall energy change that occurs during a process.
To calculate the volume change energy, you need to know two things: the pressure (P) and the change in volume (ΔV) of the system.
The formula to calculate the volume change energy is given by:
P-V work energy = P * ΔV
Here, P represents the pressure, and ΔV represents the change in volume.
By substituting the appropriate values for pressure and change in volume into the formula, you can calculate the volume change energy.
It is important to note that the volume change energy is only one component of the overall change in Gibbs free energy. The Gibbs free energy not only accounts for the volume change energy but also considers the total energy change and the entropy change in relation to temperature. Together, these components determine the overall change in "useful" energy of a system.