Multiple choice

The maximum theoretical work obtainable, when a system interacts to equilibrium with a reference environment, is called

  1. Entropy

  2. Enthalpy

  3. Exergy

  4. Rothalpy

Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Entropy: Degree of randomness in the system. Enthalpy (H ) = U + PV U = Internal energy PV = Displacement work So enthalpy is the sum of internal energy and displacement work. Exergy or Available Energy: The maximum portion of energy which could be converted into useful work by ideal process and it reduces the system to dead state. Dead state: It is a state in equilibrium with the earth and its atmosphere.