Chapter 17, Problem 8ALQ

Interpretation Introduction

Interpretation:

A cell with the electrodes of the same metal and solution of the same compound but with a different solution concentration is given. The relationships between cell potential, Gibbs free energy change and $w_{\text{max}}$ and their use for the construction of above cell is to be stated.

Concept introduction:

Concentration difference leads to the spontaneous reaction in a concentration cell because a higher difference in concentration leads to positive cell potential and therefore, the change in Gibbs free energy comes out to be negative which means a spontaneous reaction. The Gibbs free energy change is the maximum work done therefore concentration difference will lead to the maximum work that can be obtained.

To determine: The type of cell formed by the electrodes of the same metal and solutions of the same compound, but at different concentration; the relationships among $w$, $\Delta G$, $E$, $Q$ and the reason of spontaneous reaction taking place in the cell formed.