A redox reaction has a standard cell potential of at 298 K

CHEMISTRY · Single correct · AP · Chemistry · Thermodynamics and Electrochemistry · Thermodynamics and Electrochemistry

Problem

A redox reaction has a standard cell potential of

E^{\circ}_{\text{cell}}=-0.25\,\text{V}

at 298 K. Which of the following statements is correct? (a) The reaction is thermodynamically favored because

\Delta G^{\circ}

is negative. (b) The reaction is at equilibrium because the magnitude of

E^{\circ}_{\text{cell}}

is small. (c) The reaction is not thermodynamically favored because

\Delta G^{\circ}

is positive. (d) The reaction will proceed spontaneously only if the reactant concentrations are far from

1\,\text{M}