The part of the total energy of a system that accounts for the useful work done in a system is known as?

A. Enthalpy change
B. None of the above
C. Gibb’s free energy
D. Entropy

Correct Answer:

Option C – Gibb’s free energy

Explanation

Gibb’s free energy is the fraction of the total energy of a system that accounts for how much useful work can be done in a system.