Question

The thermodynamic efficiency of cell is given by

• A. $\Delta H/\Delta G$
• B. $nFE/\Delta G$
• C. $nFE/\Delta H$
• D. $nF{E}^{\circ }$

Answer 1

Answer: (C)

Thermodynamic efficiency $=\frac{nFE}{\Delta H}$, i.e., the part of enthalpy change during the course of redox reaction, given out as electrical energy.