Chapter 20, Problem 20.64P

Interpretation Introduction

Interpretation:

The way how the work obtained from the process is related with that process’s free energy change has to be identified. Also does the quantity of work is obtainable or not in practice has to be explained.

Concept introduction:

In thermodynamics a process is spontaneous if it is taking place by itself without the help of external energy.  All spontaneous process will have highly energetic initial state than the final state.  This indicates that while the process occurs, there is a decrease in free energy of the system. The increase in randomness also favors the spontaneity of a process.

In non-spontaneous process, there is a requirement of external energy source.  The free energy of the system increases.  The entropy decreases in non-spontaneous process.

Free energy change${\text{ΔG}}^0$: change in the free energy takes place while reactants convert to product where both are in standard state.