Consider the redox couple Fe³⁺ + e⁻ → Fe²⁺ with and

CHEMISTRY · Subjective · AP · Chemistry · Thermodynamics and Electrochemistry · Thermodynamics and Electrochemistry

Problem

Consider the redox couple Fe³⁺ + e⁻ → Fe²⁺ with

E^{\circ}=+0.771\,\text{V}

and

n=1

. • Cell E contains [Fe³⁺] = 0.020 M and [Fe²⁺] = 0.10 M at 298 K. • Cell F contains the same concentrations but is maintained at 350 K. Use

R = 8.314\,\text{J mol}^{-1}\text{K}^{-1}

and

F = 9.65\times10^{4}\,\text{C mol}^{-1}

. Determine the potential of each cell (to three significant figures) and indicate which cell has the larger magnitude.